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Cyclists' exposure ...
Cyclists' exposure to air pollution under different traffic management strategies
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- Krecl, Patricia (författare)
- Fed Univ Technol, Grad Program Environm Engn, Londrina, Parana, Brazil.
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- Cipoli, Yago Alonso (författare)
- Fed Univ Technol, Dept Environm Engn, Londrina, Parana, Brazil.
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- Targino, Admir Creso (författare)
- Fed Univ Technol, Grad Program Environm Engn, Londrina, Parana, Brazil.
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- Castro, Lizeth Bibiana (författare)
- Fed Univ Technol, Grad Program Environm Engn, Londrina, Parana, Brazil.
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- Gidhagen, Lars (författare)
- Swedish Meteorol & Hydrol Inst, Norrköping, Sweden.
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- Malucelli, Francisco (författare)
- KTH,Inst Res & Urban Planning Curitiba IPPUC, Curitiba Municipality, Brazil.
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- Wolf, Alyson (författare)
- Curitiba Urbanizat URBS, Curitiba Municipality, Brazil.
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Fed Univ Technol, Grad Program Environm Engn, Londrina, Parana, Brazil Fed Univ Technol, Dept Environm Engn, Londrina, Parana, Brazil. (creator_code:org_t)
- Elsevier BV, 2020
- 2020
- Engelska.
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Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697 .- 1879-1026. ; 723
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We characterized the air pollution exposure of cyclists in the city center of Curitiba (Brazil) and then systematically analyzed the influence of several traffic management strategies (bus lanes, bicycle lanes, traffic calming area, traffic lights, and cleaner vehicle technologies) on the exposure. We focused on concentrations of particulates monitored on-board bicycles: PM2.5, black carbon mass (BC) and particle number concentration (PNC), and also reported on total volatile organic compound concentrations (TVOC). Overall, mean (+/- standard deviation) exposure was moderate compared to other cities around the world (BC: 6.98 +/- 11.53 mu g m(-3), PM2.5: 33.22 +/- 25.64 mu g m(-3), PNC: 3.93 x 10(4) +/- 4.17 x 10(4) cm(-3), TVOC: 361 +/- 99 ppb). Concentrations were higher in the morning rush hour than in the afternoon traffic peak, and exhibited a large spatial variability. Bus stops and signalized traffic intersections emerged as hotspots when compared to the rest of the journey, increasing all particulate concentrations. Lower exposure was found on streets with low traffic (particularly, small number of heavy-duty vehicles) and within shallow canyon structures. The impact of traffic calming areas on cyclists' exposure is still inconclusive and further experimental and modelling studies are needed. Simple emission calculations based on traffic activity and real-world emission factors suggested that replacing the diesel bus fleet with hybrid electric buses might largely decrease (64%) the exposure to BC in the city center. Urban planners could use this valuable information to project new cycleways, which would lead to healthier active transportation. Synchronizing traffic signals might further reduce exposure at intersections.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
Nyckelord
- Bus rapid transit
- Traffic calming area
- Traffic light
- Bus stop
- Cycleway
- Urban air pollution
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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