CO2 and O2 concentrations in integral motorcycle helmets : cause for alarm?

  • The average CO2 concentrations relevant to a motorcyclist wearing an integral helmet were measured twenty years ago and found to be alarmingly high. The present study examined gas concentrations typically inhaled by a motorcyclist. Average concentrations of CO2 for persons (n=4) wearing integral motorcycle helmets were measured in the laboratory and the field to facilitate comparison to previous work, and similarly high average concentrations were found: above 2% when stationary, well below 1% for speeds of 50km/h or more. Detailed measurements of the time-dependent CO2 concentrations during normal inhalation showed levels of about half of the corresponding average concentrations, including 1% at standstill, though higher concentrations (4% or more) are inhaled at the beginning of each breath. Opening the visor at standstill lowered the average inhaled concentration only to about 0.8%. The oxygen deficiency is equal to the CO2 concentration, and could also contribute negatively to motorcyclist cognitive abilities.

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Author:P. A. Brühwiler, R. Stämpfli, R. Huber, M. Camenzind
Document Type:Conference Proceeding
Date of Publication (online):2012/08/01
Contributing corporation:Eidgenössische Materialprüfungs- und Forschungsanstalt
Release Date:2012/08/01
Tag:Kohlendioxid; Konferenz; Konzentration; Sauerstoff; Schutzhelm
Carbon dioxide; Concentration (chem); Conference; Crash helmet; Oxygen
Source:1st International Conference on ESAR "Expert Symposium on Accident Research", S. 184-188
Institutes:Sonstige / Sonstige
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
collections:BASt-Beiträge / ITRD Sachgebiete / 83 Unfall und Mensch
BASt-Beiträge / Tagungen / International Conference on ESAR / 1st International Conference on ESAR

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