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Erscheinungsjahr
Dokumenttyp
Sprache
- Englisch (337) (entfernen)
Schlagworte
- Conference (253)
- Konferenz (252)
- Accident (137)
- Unfall (137)
- Germany (134)
- Deutschland (131)
- Injury (101)
- Verletzung (100)
- Unfallrekonstruktion (73)
- Analyse (math) (61)
- Analysis (math) (60)
- Statistics (59)
- Schweregrad (Unfall, Verletzung) (58)
- Statistik (58)
- Severity (accid, injury) (56)
- Tödlicher Unfall (54)
- Fatality (53)
- Simulation (48)
- Fußgänger (47)
- Pedestrian (47)
- Reconstruction (accid) (47)
- Safety (47)
- Sicherheit (46)
- injury) (45)
- Schweregrad (Unfall (43)
- Verletzung) (43)
- Bewertung (42)
- Car (42)
- Datenbank (42)
- Data acquisition (41)
- Datenerfassung (41)
- Evaluation (assessment) (41)
- Severity (accid (39)
- Anfahrversuch (37)
- On the spot accident investigation (37)
- Untersuchung am Unfallort (37)
- Cause (36)
- Collision (36)
- Fahrzeug (36)
- Ursache (36)
- Vehicle (36)
- Zusammenstoß (36)
- Unfallverhütung (31)
- Accident prevention (30)
- Radfahrer (30)
- Cyclist (29)
- Data bank (29)
- Frontalzusammenstoß (29)
- Europa (28)
- Europe (28)
- Head on collision (28)
- Motorcyclist (27)
- Motorradfahrer (27)
- Accident reconstruction (26)
- Driver (26)
- Fahrer (26)
- Geschwindigkeit (26)
- Impact test (veh) (26)
- Fahrerassistenzsystem (25)
- Speed (25)
- Insasse (23)
- Leistungsfähigkeit (allg) (23)
- Prüfverfahren (23)
- Test method (23)
- Active safety system (22)
- Driver assistance system (22)
- Test (22)
- PKW (21)
- Aktives Sicherheitssystem (20)
- Efficiency (20)
- Method (20)
- Passives Sicherheitssystem (20)
- Vehicle occupant (20)
- Risiko (19)
- Versuch (19)
- Passive safety system (18)
- Pkw (18)
- Verfahren (18)
- Interview (17)
- Benutzung (16)
- Child (16)
- Head (16)
- Kind (16)
- Kopf (16)
- Risk (16)
- Sicherheitsgurt (16)
- Use (16)
- Anthropometric dummy (15)
- Biomechanics (15)
- Biomechanik (15)
- Motorrad (15)
- Risikobewertung (15)
- Seitlicher Zusammenstoß (15)
- Motorcycle (14)
- Risk assessment (14)
- Safety belt (14)
- Side impact (14)
- Accident rate (13)
- Dummy (13)
- Leg (human) (13)
- Alte Leute (12)
- Auffahrunfall (12)
- Brustkorb (12)
- Fahrzeugsitz (12)
- Improvement (12)
- Rear end collision (12)
- Rechenmodell (12)
- Unfallhäufigkeit (12)
- Verbesserung (12)
- Überschlagen (12)
- Behaviour (11)
- Database (11)
- Development (11)
- Entwicklung (11)
- Mathematical model (11)
- Measurement (11)
- Old people (11)
- Schutzhelm (11)
- Seat (veh) (11)
- Verhalten (11)
- Airbag (10)
- Berechnung (10)
- Crash helmet (10)
- Deformation (10)
- Fehler (10)
- Human factor (10)
- Krankenhaus (10)
- Menschlicher Faktor (10)
- Messung (10)
- Overturning (veh) (10)
- Thorax (10)
- Age (9)
- Alter (9)
- Bein (menschl) (9)
- Bremsung (9)
- Calculation (9)
- Error (9)
- Fahranfänger (9)
- Front (9)
- Hospital (9)
- Impact test (9)
- Japan (9)
- Prognose (9)
- Recently qualified driver (9)
- USA (9)
- Verformung (9)
- Wirbelsäule (9)
- Air bag (restraint system) (8)
- Braking (8)
- Digital model (8)
- Erste Hilfe (8)
- Lorry (8)
- Numerisches Modell (8)
- Prevention (8)
- Antikollisionssystem (7)
- Austria (7)
- Cervical vertebrae (7)
- Fracture (bone) (7)
- Halswirbel (7)
- Impact study (7)
- Interior (veh) (7)
- Knee (human) (7)
- Knochenbruch (7)
- Modification (7)
- Spinal column (7)
- Standardisierung (7)
- Vereinigtes Königreich (7)
- Veränderung (7)
- Österreich (7)
- Adolescent (6)
- China (6)
- Collision avoidance system (6)
- Compatibility (6)
- Cost benefit analysis (6)
- Driver training (6)
- EU (6)
- Fahrausbildung (6)
- Fahrzeuginnenraum (6)
- First aid (6)
- Forecast (6)
- India (6)
- Indien (6)
- Jugendlicher (6)
- Knie (menschl) (6)
- Knotenpunkt (6)
- Kompatibilität (6)
- Ort (Position) (6)
- Portugal (6)
- Research report (6)
- Software (6)
- Standardization (6)
- Transport infrastructure (6)
- Vehicle regulations (6)
- Verminderung (6)
- Vorn (6)
- Wirksamkeitsuntersuchung (6)
- Wirtschaftlichkeitsrechnung (6)
- Analyse (Math) (5)
- Angle (5)
- Autobahn (5)
- Correlation (math, stat) (5)
- Decrease (5)
- Deformable barrier (impact test) (5)
- Delivery vehicle (5)
- Eins (5)
- Electronic stability program (5)
- Fahrstabilität (5)
- Forschungsarbeit (5)
- Frau (5)
- Human body (5)
- Impact sled (5)
- International (5)
- Location (5)
- Menschlicher Körper (5)
- One (5)
- Policy (5)
- Politik (5)
- Post crash (5)
- Research project (5)
- Sensor (5)
- Technologie (5)
- Technology (5)
- Tunnel (5)
- Vehicle handling (5)
- Verhütung (5)
- Verkehrsinfrastruktur (5)
- Winkel (5)
- Abdomen (4)
- Aufprallschlitten (4)
- Automatisch (4)
- Belastung (4)
- Bemessung (4)
- Bremse (4)
- Classification (4)
- Coefficient of friction (4)
- Collision test (veh) (4)
- Damage (4)
- Deformierbare Barriere (Anpralltest) (4)
- Design (overall design) (4)
- Detection (4)
- Distraction (4)
- Driver information (4)
- Driving (veh) (4)
- Drunkenness (4)
- Dynamics (4)
- Dynamik (4)
- Einstellung (psychol) (4)
- Elektronisches Stabilitätsprogramm (4)
- Erziehung (4)
- Estimation (4)
- Fahrdatenschreiber (4)
- Fahrgeschicklichkeit (4)
- Fahrzeugführung (4)
- Finite element method (4)
- Fire (4)
- Forschungsbericht (4)
- France (4)
- Frankreich (4)
- Gesetzgebung (4)
- Highway design (4)
- Information (4)
- Junction (4)
- Klassifizierung (4)
- Korrelation (math, stat) (4)
- LKW (4)
- Legislation (4)
- Load (4)
- Medical aspects (4)
- Medizinische Gesichtspunkte (4)
- Motorway (4)
- Oberflächentextur (4)
- Occupant (veh) (4)
- Probability (4)
- Regression analysis (4)
- Regressionsanalyse (4)
- Reibungsbeiwert (4)
- Reproducibility (4)
- Reproduzierbarkeit (4)
- Sachschaden (4)
- Schutzeinrichtung (4)
- Schweden (4)
- Seite (4)
- Severity (acid (4)
- Sichtbarkeit (4)
- Straßenentwurf (4)
- Surface texture (4)
- Technische Vorschriften (Kraftfahrzeug) (4)
- Trunkenheit (4)
- Unfallfolgemaßnahme (4)
- United Kingdom (4)
- Unterleib (4)
- Verkehrsteilnehmer (4)
- Sichtbarkeit (4)
- Wahrscheinlichkeit (4)
- Woman (4)
- Ablenkung (psychol) (3)
- Anti locking device (3)
- Attitude (psychol) (3)
- Ausrüstung (3)
- Automatic (3)
- Autonomes Fahren (3)
- Autonomous driving (3)
- Befreiung (Bergung) (3)
- Bein (3)
- Bicycle (3)
- Blickfeld (3)
- Brake (3)
- Bus (3)
- Camera (3)
- Coach (3)
- Crash test (3)
- Czech Republic (3)
- Decision process (3)
- Detektion (3)
- Digitale Bildverarbeitung (3)
- Durability (3)
- Education (3)
- Effectiveness (3)
- Electric vehicle (3)
- Elektrofahrzeug (3)
- Entscheidungsprozess (3)
- Equipment (3)
- Event data recorder (road vehicle) (3)
- Extrication (3)
- Fahrrad (3)
- Field of vision (3)
- Gefahrenabwehr (3)
- Griffigkeit (3)
- Information documentation (3)
- Kamera (3)
- Kleidung (3)
- Korea (Süd) (Demokratische Republik) (3)
- Lieferfahrzeug (3)
- Lkw (3)
- Main road (3)
- Man (3)
- Mann (3)
- Medizinische Untersuchung (3)
- Methode der finiten Elemente (3)
- Norm (tech) (3)
- Overlapping (3)
- Passenger (3)
- Reisebus (3)
- Republic of Korea (3)
- Road network (3)
- Road user (3)
- Run off the road (accid) (3)
- Safety fence (3)
- Security (3)
- Skidding resistance (3)
- Skill (road user) (3)
- Spain (3)
- Spanien (3)
- Specification (standard) (3)
- Specifications (3)
- Steifigkeit (3)
- Stiffness (3)
- Straßennetz (3)
- Time (3)
- Tschechische Republik (3)
- United kingdom (3)
- Verschiebung (3)
- Versuchspuppe (3)
- Vorne (3)
- Windschutzscheibe (3)
- Zeit (3)
- Abbiegen (2)
- Abkommen von der Fahrbahn (Unfall) (2)
- Absorption (2)
- Accompanied driving (2)
- Accuracy (2)
- Adult (2)
- Advanced driver assistance system (2)
- Air pollution (2)
- Antiblockiereinrichtung (2)
- Apparatus (measuring) (2)
- Australia (2)
- Australien (2)
- Automatische Notbremsung (2)
- Autonomes Fahrzeug (2)
- Autonomous emergency braking (2)
- Autonomous vehicle (2)
- Begleitetes Fahren (2)
- Behinderter (2)
- Beinahe Unfall (2)
- Blutkreislauf (2)
- Boden (2)
- Body (car) (2)
- Brand (2)
- Bremsweg (2)
- Carbon dioxide (2)
- Circulation (blood) (2)
- Climate change (2)
- Clothing (2)
- Communication (2)
- Compliance (specif) (2)
- Contact (tyre road) (2)
- Cost (2)
- Crash Test (2)
- Crash victim (2)
- Crashtest (2)
- Crossing the road (2)
- Data base (2)
- Dauerhaftigkeit (2)
- Depth (2)
- Deutschalnd (2)
- Digital image processing (2)
- Disablement (2)
- Dreidimensional (2)
- Driving test (2)
- EU directive (2)
- EU-Richtlinie (2)
- Edge (2)
- Eindringung (2)
- Eingabedaten (2)
- Electric bicycle (2)
- Electronic driving aid (2)
- Elektrofahrrad (2)
- Emergency (2)
- Emission (2)
- Entdeckung (2)
- Ergonomics (2)
- Ergonomie (2)
- Erwachsener (2)
- Eu (2)
- Exhaust aftertreatment (2)
- Experience (human) (2)
- Expert system (2)
- Expertensystem (2)
- Fahrbahnüberquerung (2)
- Fahrerinformation (2)
- Fahrprüfung (2)
- Fahrsimulator (2)
- Fernverkehrsstraße (2)
- Feuer (2)
- Foot (not a measure) (2)
- Fuß (2)
- Führerschein (2)
- Geländefahrzeug (2)
- Gesetzesübertretung (2)
- Gewicht (2)
- Government (national) (2)
- Harmonisation (2)
- Hazard (2)
- Head restraint (2)
- Highway (2)
- Hinten (2)
- In service behavior (2)
- Incident detection (2)
- Input data (2)
- Intelligent transport system (2)
- Intersection (2)
- Jahreszeit (2)
- Karosserie (2)
- Klimawandel (2)
- Kommunikation (2)
- Kontakt Reifen Straße (2)
- Kontrolle (2)
- Kopfstütze (2)
- Kosten (2)
- Kunststoff (2)
- Landstraße (2)
- Langfristig (2)
- Learning (2)
- Long term (2)
- Luftverunreinigung (2)
- Medical examination (2)
- Messgerät (2)
- Methode der finite Elemente (2)
- Mobile phone (2)
- Mobiltelefon (2)
- Model (not math) (2)
- Modell (2)
- Motorisierungsgrad (2)
- Movement (2)
- Near miss (2)
- Netherlands (2)
- Niederlande (2)
- Notfall (2)
- Offence (2)
- Output (2)
- Penetration (2)
- Planning (2)
- Planung (2)
- Plastic material (2)
- Posture (2)
- Prototyp (2)
- Prototype (2)
- Public transport (2)
- Quality (2)
- Quality assurance (2)
- Qualität (2)
- Qualitätssicherung (2)
- Reaction (human) (2)
- Reaktionsverhalten (2)
- Rear (2)
- Recording (2)
- Regierung (staat) (2)
- Restraint system (2)
- Richtlinien (2)
- Risk taking (2)
- Road traffic (2)
- Rural road (2)
- Season (2)
- Shock (2)
- Side (2)
- Simulator (driving) (2)
- Soil (2)
- Sport utility vehicle (2)
- Straße (2)
- Straßenverkehr (2)
- Straßenverkehrsrecht (2)
- Störfallentdeckung (2)
- Surfacing (2)
- Surveillance (2)
- Sweden (2)
- Telefon (2)
- Telephone (2)
- Theorie (2)
- Theory (2)
- Three dimensional (2)
- Tiefe (2)
- Traffic (2)
- Traffic regulations (2)
- Traffic restraint (2)
- Trend (stat) (2)
- Turn (2)
- Unfallopfer (2)
- Vehicle ownership (2)
- Verkehr (2)
- Verkehrsbeschränkung (2)
- Weather (2)
- Weight (2)
- Wet road (2)
- Windscreen (veh) (2)
- Witterung (2)
- Zeitreihe (stat) (2)
- Öffentlicher Verkehr (2)
- Überlappung (2)
- (menschl) (1)
- Abfluss (1)
- Ability (road user) (1)
- Abkommen von der Fahrbahn (1)
- Ablenkung (1)
- Abstandsregeltempomat (1)
- Acceleration (1)
- Acceptability (1)
- Accident black spot (1)
- Accident proneness (1)
- Accident severity (1)
- Active safety (1)
- Active safety system; Automatic; Brake; Car; Collision avoidance system; Conference; Driver assistance system; Germany; Impact test (veh); Rear end collision; Severity (accid (1)
- Activity report (1)
- Adaptive cruise controll (1)
- Administration (1)
- Aged people (1)
- Aggression (psycho) (1)
- Aggression (psychol) (1)
- Air quality management (1)
- Air traffic control (1)
- Air transport (1)
- Airbag (restraint system) (1)
- Aktive Sicherheit (1)
- Alternative (1)
- Analyse (1)
- Analyses (math) (1)
- Anthropmetric dummy (1)
- Anthropometrie (1)
- Anthropometry (1)
- Antiblockiersystem (1)
- Arbeitsgruppe (1)
- Arm (human) (1)
- Arm (menschl) (1)
- Arzneimittel (1)
- Asphaltstraße (Oberbau) (1)
- Atives Sicherheitssystem (1)
- Attention (1)
- Audit (1)
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- Aufmerksamkeit (1)
- Aufzeichnung (1)
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- Bridge management system (1)
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- Brücke (1)
- Brücken Management System (1)
- Budget (1)
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- Concentration (chem) (1)
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- Conference; Germany; Injury; Medical examination; Spinal column; X ray (1)
- Construction (1)
- Contact (tyre (1)
- Correlation (1)
- Critical path method (1)
- Cross roads (1)
- Cycle track (1)
- Cycling (1)
- Damping (1)
- Data processing (1)
- Data transmission (telecom) (1)
- Datenverarbeitung (1)
- Datenübertragung (Telekom) (1)
- Datenübertragung (telekom) (1)
- Dauer (1)
- Day (24 hour period) (1)
- Decke (Straße) (1)
- Decke [Straße] (1)
- Deformierte Barriere (Anpralltest) (1)
- Deicing (1)
- Demand (econ) (1)
- Demografie (1)
- Demography (1)
- Density (1)
- Deterioration (1)
- Diagnostik (1)
- Dichte (1)
- Diesel engine (1)
- Diffusion (1)
- Digital computer (1)
- Digitalrechner (1)
- Dispersion (stat) (1)
- Displacement (1)
- Distribution (gen) (1)
- Driving aid (electronic) (1)
- Driving aptitude (1)
- Driving licence (1)
- Driving license (1)
- Droge (1)
- Drugs (1)
- Dtetection (1)
- Durchsichtigkeit (1)
- Dynamic penetration test (1)
- Dämpfung (1)
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- Eichung (1)
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- Elastizitätsmodul (1)
- Electronics (1)
- Elektronik (1)
- Elektronisches Stabilitätsprogram (1)
- Emergency medical aid (1)
- Empfindlichkeit (1)
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- Enforcement (law) (1)
- Enteisung (1)
- Entgleisung (Zug) (1)
- Environment (1)
- Environment protection (1)
- Erdarbeiten (1)
- Erfahrung (menschl) (1)
- Evaluation (Assessment) (1)
- Event data recorder (Road vehicle) (1)
- Expressway (1)
- Face (human) (1)
- Facility (1)
- Fahrassistenzsystem (1)
- Fahrbahn (1)
- Fahrererfahrung (1)
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- Infotainment system (1)
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Institut
- Sonstige (337) (entfernen)
This study aimed to better understand nitrate transport in the soil system in a part of the state of North Rhine-Westphalia, in Germany, and to aid in the development of groundwater protection plans. An advection-diffusion (AD) cell was used in a miscible displacement experiment setup to characterize nitrate transport in 12 different soil samples from the study area. The three nitrate sorption isotherms were tested to define the exact nitrate interaction with the soil matrix. Soils varied in their properties which in its turn explain the variations in nitrate transport rates. Soil texture and organic matter content showed to have the most important effect on nitrate recovery and retardation. The miscible displacement experiment indicated a decrease in retardation by increasing sand fraction, and an increase in retardation by increasing soil organic matter content. Soil samples with high sand fractions (up to 94 %) exhibited low nitrate sorption capacity of less than 10 %, while soils with high organic matter content showed higher sorption of about 30 %. Based on parameterization for nitrate transport equation, the pore water velocity for both sandy and loamy soils were significantly different (P < 0.001). Pore water velocity in sandy soil (about 4 x 10 high 3 m/s) was about 100 to 1000 larger than in loamy soils (8.7 x 10 high 5 m/s). On the other hand, the reduction in nitrate transport in soils associated with high organic matter was due to fine pore pathways clogged by fine organic colloids. It is expected that the existing micro-phobicity increased the nitrate recovery from 9 to 32 % resulting in maximum diffusion rates of about 3.5 x 10 high 5 m/s2 in sandy soils (sample number CS-04) and about 1.4 x 10 high 7 m/s2 in silt loam soils (sample number FS-02).
The term test procedure refers to a method that describes how a system has to be tested to identify and assess specific behavior or properties by experiments. This also includes the specification of required tools, equipment, boundary conditions, and evaluation methods. Test procedures are an essential tool to check whether desired product properties are present, which of course also applies to the development of driver assistance systems. In addition to development and release testing that mainly is performed by the vehicle or system manufacturer, there are tests with the purpose of an independent product testing that are conducted by external test organizations. These tests are needed for vehicle type approval (for admission to a specific market), in the context of applying the standard for functional safety (in both cases mainly executed by technical services (being accredited as certification laboratory)) or for customer information purposes (by a test institute for consumer protection). The focus of this chapter is these "external" test methods. After a taxonomy of test procedures, the differences between legislation (type approval) and consumer testing are highlighted. Typical tests and the associated test setup, tools, and assessment criteria are discussed, and an outlook toward testing in the near and mid-future is given.
The term driver assistance systems in the chapter title shall be understood to include vehicle automation. This chapter starts with a homogeneous and consistent classification and nomenclature of all kinds of driver assistance systems known and under discussion today (including vehicle automation). It thereby builds upon familiar classification schemes by the German Federal Highway Research Institute (BASt) and the standardization body SAE international. Detailed evaluation of the German legal situation for driver assistance systems and vehicle automation is provided in the following Sect. 2. In Sect. 3, an overview is given on the legal system in the US to reveal aspects relevant for vehicle automation. This is intended as initial information for those not acquainted to the US legal system which has been the first to regulate automation in several federal states. Finally, in Sect. 4, the current rating scheme of the European New Car Assessment Programme (EuroNCAP) is presented in comparison to legal instruments. The model of a consumer protection based approach proves to be a flexible instrument with great advantages in promoting new technologies. Technical vehicle regulations on the other hand rule minimum requirements. Both approaches are needed to achieve maximum vehicle safety.
The Netherlands is on the way to change its existing skid resistance measuring method for its highway network from the Dutch RAW 72, a longitudinal force method, to the Sideway Force method. This method is described in the Technical Specification 15901-8 (SKM device) as well as 15901-6 (SCRIM device) and is in use in 9 European countries. The CEN TC 227 WG5 on Surface Characteristics is currently working on combining of these two technical Specifications into a European standard for Sideway-Force (SWF) measurement devices. The idea of this change in the Netherlands was perceived in 2013 and since then a lot of meetings have been held with the different Dutch decision makers as well as with countries which currently operate SWF devices. There was an intensive exchange of knowledge about these devices and their corresponding quality assurance systems, because the Netherlands wanted to incorporate and rely on an existing system of a neighbor country without losing their present level of quality. The Netherlands has therefore decided to incorporate the German SKM approach. The network monitoring with the new system will start in 2017. To ensure the quality of skid resistance measurements and further cooperation in this field, it has been decided to initiate an alliance between BASt and the Dutch road owner Rijkswaterstaat (RWS). This alliance will facilitate an exchange of research activities, calibration of the Dutch systems according to the existing German Standard as well as control measurements with a BASt-device on the Dutch network during the network monitoring. During 2016 also comparative measurements will be performed on a network level with the current Dutch device and with an SKM device to determine a conversion between the two and to be able to define new threshold values.
APT with the mobile load simulator MLS10 towards non-destructive pavement structural analysis
(2019)
In 2014 a research program has been started about non-destructive test methods to evaluate the structure of pavements. This task has been given to two research groups - first research group is led by RWTH Aachen University (Rheinisch-Westfälische Technische Hochschule) and the second by University of Siegen. This paper focuses on the initial findings of the running research program. The assessment of the existing infrastructure and its condition will be one of the main tasks during the next years in order to use the available budget for maintenance accurately and efficiently. Therefore, it is necessary to identify possible damages and examine their effects on the road construction. BASt (Federal Highway Research Institute) is using the Mobile Load Simulator MLS10 for accelerated pavement testing (APT) on different types of pavements. In addition to non-destructive test methods, sensors are applied to measure structural impacts. The overall objective of this research program is to develop a non-destructive test method that allows the calculation of the remaining life time and load cycles of pavements. To simulate realistic wheel loads in a short period of time the MLS10 on German full scale standard pavement constructions has been used. The first pavement test section was loaded with 3 x 10 high 6 50 kN wheel loads while the second, thinner pavement test section was loaded with 3 x 10 high 5 50 kN wheel loads. Both loads are equivalent to the pavement design load. Three different strategies have been used to analyze and monitor structural changes. The innovative measurements have been realized by the two research groups to collect data for their models. The RWTH Aachen collected data with twelve geophones aligned in a row parallel to the wheel path. The geophones measure the entire vertical deflection basin of the pavement surface that exists due to the passing real truck wheels. These measurements were done for different truck speeds and at different transverse distances to the wheel path. The University of Siegen collected data by using acceleration sensors on the surface of the road construction. After recording the data they were integrated into displacement signals and evaluated. Additionally to those measurements BASt used conventional equipment to monitor the pavement structure and surface characteristics. The measurements and evaluation tools used for the innovation program have a high potential to validate APT programs in the future. Based on this research it is possible to start further research activities to push the non-destructive evaluation of pavements structures - not only in APT - into an improved direction.
Federal highway A 26 in Germany : reinforced dams in soft soils - control method according DIN 1054
(2004)
In 2001 the construction of the Federal Highway A 26 in Lower Saxony (north of Germany) was started. In this area the underground is without any substantial bearing capacity as it consists of soft layers ( clay, peat) with a thickness of up to 12 m. Because it was not possible to exchange the soil neither completely nor partially pre-loading procedure (consolidation method) was chosen for this construction. Short- and long-term stability are ensured by the use of high-tensile fabrics for reinforcement at the dam basis. The vertical and horizontal deformations and the stress changes in the soil, caused by the pre-load procedure, has to be controlled by special geotechnical measurements. Additionally, in the higher parts of the dam the strain behaviour of the high-tensile fabrics is measured. These measurements form the basis for the application of the control method according DIN 1054. In this article, the special circumstances of this project are described. Further on the geotechnical measurements, the winning and evaluation of the necessary parameters of the subsoil, and the consequences of these data for the ongoing of the project are laid down. Intermediate results of the geotechnical measurements are described.
The road transport infrastructure is facing many challenges and the subsequent adaptation of the infrastructure is of utmost concern. These challenges are as follows: globalization, sustainability, technological and demographic change, an increase in goods transport and climate change. Various climate projections predict changing climatic parameters such as temperature, precipitation and wind speed for Germany. This could have severe impacts on road transport infrastructure as well as road traffic itself. At the Federal Highway Research Institute (Bundesanstalt für Straßenwesen), a strategy was developed to adapt roads and engineering structures to the impacts of climate change. The strategy "Anpassung der Straßenverkehrsinfrastruktur an den Klimawandel /Adaptation of road traffic infrastructure to climate change (AdSVIS)" currently comprises about 15 projects. Adaptation measures are to be developed for the identified risk areas and consequently their effectiveness has to be assessed.
Automated driving will provide many kinds of benefits - some direct and some indirect. The benefits originate at the individual level, from changes in the behaviour of drivers and travellers with regard to driving and mobility, ending up with benefits at the social level via changes in the whole transport system and society, where many of the current planning and operations paradigms are likely to be transformed by automated driving. There may also be disbenefits, particularly at a social level, for example in intensity of travel which could result in additional congestion and increased use of natural resources. There may also be unintended consequences. For example, we do not know the impacts on public transport: driverless vehicles could provide a means to a lower cost service provision, but the availability of automated cars could lead to more car travel at the expense of collective transport.
Motorcycling is a fascinating kind of transportation. While the riders' direct exposure to the environment and the unique driving dynamics are essential to this fascination, they both cause a risk potential which is several times higher than when driving a car. This chapter gives a detailed introduction to the fundamentals of motorcycle dynamics and shows how its peculiarities and limitations place high demands on the layout of dynamics control systems, especially when cornering. The basic principles of dynamic stabilization and directional control are addressed along with four characteristic modes of instability (capsize, wobble, weave, and kickback). Special attention is given to the challenges of braking (brake force distribution, dynamic over-braking, kinematic instability, and brake steer torque induced righting behavior). It is explained how these challenges are addressed by state-of-the-art brake, traction, and suspension control systems in terms of system layout and principles of function. It is illustrated how the integration of additional sensors " essentially roll angle assessment " enhances the cornering performance in all three categories, fostering a trend to higher system integration levels. An outlook on potential future control systems shows exemplarily how the undesired righting behavior when braking in curves can be controlled, e.g., by means of a so-called brake steer torque avoidance mechanism (BSTAM), forming the basis for predictive brake assist (PBA) or even autonomous emergency braking (AEB). Finally, the very limited potential of brake and chassis control to stabilize yaw and roll motion during unbraked cornering accidents is regarded, closing with a promising glance at roll stabilization through a pair of gimbaled gyroscopes.
In line with the new definition introduced by the European Commission (EC), the number of seriously injured road casualties in Germany for 2014 is assessed in this study. The number of MAIS3+ casualties is estimated by two different methodological approaches. The first approach is based on data from the German Inâ€Depth Accident Study (GIDAS), which is closely related to the German Road Traffic Accident Statistics. The second approach is based on data from the German TraumaRegister DGU-® (TRâ€DGU), which includes many more hospitals but not all MAIS3+ injuries.
Established in 1997, the European New Car Assessment Programme (Euro NCAP) provides consumers with a safety performance assessment for the majority of the most popular cars in Europe. Thanks to its rigorous crash tests, Euro NCAP has rapidly become an important driver safety improvement to new cars. After ten years of rating vehicles, Euro NCAP felt that a change was necessary to stay in tune with rapidly emerging driver assistance and crash avoidance systems and to respond to shifting priorities in road safety. A new overall rating system was introduced that combines the most important aspects of vehicle safety under a single star rating. The overall rating system has allowed Euro NCAP to continue to push for better fitment and higher performance for vehicles sold on the European market. In the coming years, the safety rating is expected to play an important role in the support of the roll-out of highly automated vehicles.
Fire incidents are among the most relevant for people in a tunnel. Therefore, it is important to be sufficiently prepared for such events. A large scale fire test is to be used to help evaluate the initial burning duration and the time it takes for the fire to spread to other vehicles in the tunnel, and in particular how long it takes for a truck carrying wooden pallets to catch fire, taking into consideration the extremely high temperatures. The goal, therefore, is to determine the time it takes for a fire to spread to other vehicles in the tunnel. In the large scale fire test, an accident in a tunnel with one-way traffic is simulated between a truck loaded with approximately 3.7 t of wooden Europol pallets and a passenger car. Directly behind each of the vehicles involved in the accident there is another car which stops at a distance of 1.0 m. Approximately 300 litres of burning diesel are discharged from the truck's fuel tank, which is simulated by using approximately 400 litres of isopropanol. A 10 m-² burning pool forms underneath the truck. Other objectives of the large scale fire test are the validation of the CFD models and the evaluation of the progression of the thermal release ratios estimated for the simulation. The thermal release ratios generated in the test are determined and evaluated using various models.
Risk-based approach for the protection of land transport infrastructure against extreme rainfall
(2016)
The aim of the research project "Risk based approach for the protection of transport infrastructure against extreme rainfall RAINEX" is the development of a practical methodology for the identification and assessment of both vulnerable as well as critical transport infrastructures towards extreme rainfall events consequences. The developed methodology is based on expert knowledge and includes qualitative and semi-quantitative analyses regarding the assessment of the vulnerability and criticality of relevant transport infrastructures. The process chain from the spatial rainfall to the concentrated runoff in the river channel was shown to assess the local hazard resulting in the local risk. The main result of the project is a practice-oriented and applicable methodology and a comprehensive and well-developed security handbook.
Research to inform policy is often challenged with how to genuinely use and implement research findings in decision-making and policy-planning. To begin with, the dialogue between researchers and decision-makers is essential to ensure profound understanding and legitimate interpretations of the results. Furthermore, the step to drawing practical conclusions and processing them into actions can only succeed if research findings are diffused to decision-making levels with influence on the matter, and mechanisms to knowledge transfer in the presence of a stable, favourable policy environment exist. Research investments into the topic of electromobility in Europe are substantial, and subtopics aiming to inform national policy-makers address a complex set of aspects from environmental and societal to technological and economic. This paper has a two-fold objective, the first of which is to present the results of scenarios to explore electromobility deployment in Finland, Germany and the European Union. The second is to discuss the challenges and solutions to bridge the gap from research findings towards decision-making and policy-planning, using the authors' electromobility scenario work as an example. The electromobility scenarios were built using the VECTOR21 model (Mock, 2010), and the rationale was to simulate vehicle sales and markets under different policy settings and calculate the most economical solution to fulfill regulation on COâ‚‚ emissions as set by the European Commission (2009). The model allows calculating the market diffusion of alternative powertrain technologies to the European market until 2030, taking into account different taxation schemes, incentives and other country-specific characteristics. The authors also present the cost-benefit-analysis of the modelling results to assess the different scenarios and to show variation between regions regarding profitability of alternative technological or political support and interventions. To proceed from research findings towards decision-making and policy-planning, the authors made observations relating to transfer of research knowledge and interpretation of their electromobility scenario results in national policy contexts. An evaluation of how the function of research to inform policy in this case succeeded is provided. In addition, the influence of expert opinions on the political decision-making process will be discussed through experiences from an expert questionnaire conducted to survey the importance of costs, time requirement, acceptance and other criteria of promotion measures of electromobility.
The first version of German Highway Capacity Manual was published in 2001. Now, a new version is published in 2015 (HBS 2015). For the new German Highway Capacity Manual, most major chapters are revised and some of them are totally rewritten. The chapter for merge, diverge, and small weaving segments is rewritten in accordance with forthcoming developments in the past 10 years. In this paper, an overview of the chapter in the new German Highway Capacity Manual is presented. Procedures dealing with performance analyses and level of service (LOS) of those segments are introduced both for freeways and rural highways. Differences between the former version and the new version of the chapter in the German Highway Capacity Manual are indicated and discussed. In most of the existing highway capacity manuals, LOS of merge, diverge, and small weaving segments is traditionally defined by speed, volume, or density in critical areas. In that traditional concept several capacity values of different critical areas (merge, diverge, and weaving) as well as upstream and downstream basic segments within the influence areas are evaluated separately. In the new HBS 2015, a new model which considers the total merge, diverge, and weaving segment as an entire object is incorporated. A combined volume-to-capacity ratio (freeways) or a combined density (rural highways) is used for defining the LOS of the total segment. The parameters of the new procedure are functions of the number of lanes of the major road, the number of lanes in the on-ramp or off-ramp, and the predefined geometric design of those segments. The coefficients are calibrated with field data or defined by experts" experiences within a matrix of coefficients. With those procedures, the traffic quality (LOS) can be obtained directly as a function of the volumes or densities on the major road and on the on-ramp or off-ramp respectively. The new procedure has the following advantages: a) a uniform function for all types of merge, diverge, and small weaving segments, b) traffic quality assessment for all critical areas under investigation in one step, and c) the procedure can easily be calibrated. For applications in practice, a set of graphs is provided.
Road condition acquisition and assessment are the key to guarantee their permanent availability. In order to maintain a country's whole road network, millions of high-resolution images have to be analyzed annually. Currently, this requires cost and time excessive manual labor. We aim to automate this process to a high degree by applying deep neural networks. Such networks need a lot of data to be trained successfully, which are not publicly available at the moment. In this paper, we present the GAPs dataset, which is the first freely available pavement distress dataset of a size, large enough to train high-performing deep neural networks. It provides high quality images, recorded by a standardized process fulfilling German federal regulations, and detailed distress annotations. For the first time, this enables a fair comparison of research in this field. Furthermore, we present a first evaluation of the state of the art in pavement distress detection and an analysis of the effectiveness of state of the art regularization techniques on this dataset.
One main objective of the EU-Project SENIORS is to provide improved methods to assess thoracic injury risk to elderly occupants. In contribution to this task paired simulations with a THOR dummy model and human body model will be used to develop improved thoracic injury risk functions. The simulation results can provide data for injury criteria development in chest loading conditions that are underrepresented in PMHS test data sets that currently proposed risk functions are based on. To support this approach a new simplified generic but representative sled test fixture and CAE model for testing and simulation were developed. The parameter definition and evaluation of this sled test fixture and model is presented in this paper. The justification and definition of requirements for this test set-up was based on experience from earlier studies. Simple test fixtures like the gold standard sled fixture are easy to build and also to model in CAE, but provide too severe belt-only loading. On the other hand a vehicle buck including production components like airbag and seat is more representative, but difficult to model and to be replicated at a different laboratory. Furthermore some components might not be available for physical tests at later stage. The basis of the SENIORS generic sled test set-up is the gold standard fixture with a cable seat back and foot rest. No knee restraint was used. The seat pan design was modified including a seat ramp. The three-point belt system had a generic adjustable load limiter. A pre-inflated driver airbag assembly was developed for the test fixture. Results of THOR test and simulations in different configurations will be presented. The configurations include different deceleration pulses. Further parameter variations are related to the restraint system including belt geometry and load limiter levels. Additionally different settings of the generic airbag were evaluated. The test set-up was evaluated and optimized in tests with the THOR-M dummy in different test configurations. Belt restraint parameters like D-ring position and load limiter setting were modified to provide moderate chest loading to the occupant. This resulted in dummy readings more representative of the loading in a contemporary vehicle than most available PMHS sled tests reported in the literature. However, to achieve a loading configuration that exposes the occupant to even less severe loading comparable to modern vehicle restraints it might be necessary to further modify the test set-up. The new generic sled test set-up and a corresponding CAE model were developed and applied in tests and simulations with THOR. Within the SENIORS project with this test set-up also volunteer and PMHS as well as HBM simulations are performed, which will be reported in other publications. The test environment can contribute in future studies to the assessment of existing and new frontal impact dummies as well as dummy improvements and related instrumentation. The test set-up and model could also serve as a new standard test environment for PMHS and volunteer tests as well as HBM simulations.
The levels of continuous vehicle automation have become common knowledge. They facilitate overall understanding of the issue. Yet, continuous vehicle automation described therein does not cover "automated driving" as a whole: Functions intervening temporarily in accident-prone situations can obviously not be classified by means of continuous levels. Continuous automation describes the shift in workload from purely human driven vehicles to full automation. Duties of the driver are assigned to the machine as automation levels rise. Emergency braking, e.g., is obviously discontinuous and intensive automation. It cannot be classified under this regime. The resulting absence of visibility of these important functions cannot satisfy " especially in the light of effect they take on traffic safety. Therefore, in order to reach a full picture of vehicle automation, a comprehensive approach is proposed that can map out different characteristics as "Principle of Operation" at top level. On this basis informing and warning functions as well as functions intervening only temporarily in near-accident situations can be described. To reach a complete picture, levels for the discontinuous, temporarily intervening functions are proposed " meant to be the counterpart of the continuous levels already in place. This results in a detailed and independent classification for accident-prone situations. This finally provides for the visibility these important functions deserve.
PROSPECT (Proactive Safety for Pedestrians and Cyclists) is a collaborative research project involving most of the relevant partners from the automotive industry (including important active safety vehicle manufacturers and tier-1 suppliers) as well as academia and independent test labs, funded by the European Commission in the Horizon 2020 research program. PROSPECT's primary goal is the development of novel active safety functions, to be finally demonstrated to the public in three prototype vehicles. A sound benefit assessment of the prototype vehicle's functionality requires a broad testing methodology which goes beyond what has currently been used. Since PROSPECT functions are developed to prevent accidents in intersections, a key aspect of the test methodology is the reproduction of natural driving styles on the test track with driving robots. For this task, data from a real driving study with subjects in a suburb of Munich, Germany was used. Further data from Barcelona will be available soon. The data suggests that intersection crossing can be broken down into five phases, two phases with straight deceleration / acceleration, one phase with constant radius and speed turning, and two phases where the bend is imitated or ended. In these latter phases, drivers mostly combine lateral and longitudinal accelerations and drive what is called a clothoid, a curve with curvature proportional to distance travelled, in order to change lateral acceleration smoothly rather than abrupt. The data suggests that the main parameter of the clothoid, the ratio distance travelled to curvature, is mostly constant during the intersections. This parameter together with decelerations and speeds allows the generation of synthetic robot program files for a reproduction of natural driving styles using robots, allowing a much greater reproducibility than what is possible with human test drivers. First tests show that in principle it is possible to use the driving robots for vehicle control in that manner; a challenge currently is the control performance of the robot system in terms of speed control, but it is anticipated that this problem will be solved soon. Further elements of the PROSPECT test methodology are a standard intersection marking to be implemented on the test track which allows the efficient testing of all PROSPECT test cases, standard mobile and light obstruction elements for quick reproduction of obstructions of view, and a concept for tests in realistic surroundings. First tests using the PROSPECT test methodology will be conducted over the summer 2017, and final tests of the prototype vehicles developed within PROSPECT will be conducted in early 2018
Europe has benefited from a decreasing number of road traffic fatalities. However, the proportion of older road users increases steadily. In an ageing society, the SENIORS project aims to improve the safe mobility of older road users by determining appropriate requirements towards passive vehicle safety systems. Therefore, the characteristics of road traffic crashes involving the elderly people need to be understood. This paper focuses on car occupants and pedestrians or cyclists in crashes with modern passenger cars. Ten crash databases and four hospital statistics from Europe have been analysed to answer the questions on which body regions are most frequently and severely injured in the elderly, and specific injuries sustained by always comparing older (65 years and above) with midâ€aged road users (25â€64 years). It was found that the body region thorax is of particularly high importance for the older car occupant with injury severities of AIS2 or AIS3+, where as the lower extremities, head and the thorax need to be considered for older pedestrians and cyclists. Further, injury risk functions were provided. The hospital data analysis showed less difference between the age groups. The linkage between crash and hospital data could only be made on a general level as their inclusion criteria were quite different.