Potential pollution exposure reductions from small-distance bicycle lane separations

Many studies have compared the exposure of cyclists to those taking other modes of transport and compared exposure differences between backstreet routes and main roads. In this study, we employ the use of three bicycles travelling in unison to sample concentrations of ultrafine particles (UFPs), car...

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Bibliographic Details
Published in:Journal of transport & health 2017-03, Vol.4, p.40-52
Main Authors: Pattinson, Woodrow, Kingham, Simon, Longley, Ian, Salmond, Jenny
Format: Article
Language:English
Subjects:
Bicycle lanes
Exposure reduction
Mobile monitoring
Traffic emissions
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Summary:Many studies have compared the exposure of cyclists to those taking other modes of transport and compared exposure differences between backstreet routes and main roads. In this study, we employ the use of three bicycles travelling in unison to sample concentrations of ultrafine particles (UFPs), carbon monoxide (CO) and fine particulate matter (PM1.0) at three different distances from the traffic flow, in a central city park area of Christchurch, New Zealand. Similar research has been done using stationary equipment, but this may not accurately represent exposure differences while moving with a stream of vehicles. Three cyclists were equipped with a set of identical instruments and rode continuously along a road, the road׳s sidewalk (7m away) and an off-road path (19m away), for a total of 6h and 45min, over 5 afternoon sampling runs during fall. Data were analysed in the form of linear mixed-effects models, with cyclist position (distance from edge of nearest traffic lane), wind speed, and temperature, having statistically significant effects on mean exposures (p
ISSN:2214-1405
2214-1413
DOI:10.1016/j.jth.2016.10.002