Driversʹ exposure to carbon monoxide in Nottingham, U.K.

We present the preliminary results of a 7-week program to monitor the levels and time integral exposure of carbon monoxide experienced by drivers in Nottingham U.K. The results show that the levels are within the World Health Organisationʹs guidelines for 1 h exposure. The relationship between vehicle speed and carbon monoxide concentration is also investigated and is found to be not significant.