The effect of speed bumps and humps on the concentrations of CO, NO and NO2 in ambient air
- 44 Downloads
Traffic-calming measures act as the instruments to reduce the speed of vehicles. They make a major contribution to road safety; however, on the other hand, air pollution is more likely to occur due to the fact that motor vehicles use brakes and accelerate more frequently. The study reviewed two types of traffic-calming devices, that is, trapezoid-shaped speed humps made of asphalt and plastic circular speed bumps. The obtained results showed an increase in the concentrations of NO, NO2 and CO found in the pollutants emitted from the vehicles approaching speed bumps/humps compared to the concentrations of the same types of pollutants at the check points. As for trapezoidal speed humps, the concentration of nitrogen dioxide increased on average by 1.8 times, that of nitrogen monoxide by 4.3 times and that of carbon monoxide by 2.2 times. Meanwhile, the concentration of nitrogen dioxide at circular plastic speed bumps rose on average by 2.5 times, that of nitric monoxide by 5.0 times and that of carbon monoxide by 3.2 times.
KeywordsSpeed bumps Speed humps Carbon monoxide Nitrogen oxides Pollution caused by road transport
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Baltrėnas HP, Januševičius T, Chlebnikovas A (2017) Research into the impact of speed bumps on particulate matter air pollution. Meas J Int Meas Confed 100. https://doi.org/10.1016/j.measurement.2016.12.042
- Daham B, Andrews GE, Li H et al (2005) Quantifying the effects of traffic calming on emissions using on-road measurements. SAE Technical Papers, DetroitGoogle Scholar
- Ewing R (2001) Impacts of traffic calming. Transp Q 55:33–45Google Scholar
- Haworth N, Symmons M (2001) the Relationship Between Fuel Economy and Safety OutcomesGoogle Scholar
- Höglund, Paul G; Niittymaki J (1999) Estimating vehicle emissions and air pollution related to driving patterns and traffic calming. In: Urban transport Systems. pp 1–11Google Scholar
- Kordani AA, Molan AM, Monajjem S, Sadeghvaziri E (2014) Simulation modeling of dynamic response of vehicles to different types of speed control humps. In: T and DI congress 2014: Planes, trains, and automobiles - proceedings of the 2nd Transportation and Development Institute CongressGoogle Scholar
- Litman T (1999) Traffic calming: benefits, costs and equity impactsGoogle Scholar
- Molan AM, Kordani AA (2014) Optimization of speed hump profiles based on vehicle dynamic performance modeling. J Transp Eng 140:04014035. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000686 CrossRefGoogle Scholar
- Rothman L, Macpherson A, Buliung R et al (2015) Installation of speed humps and pedestrian-motor vehicle collisions in Toronto, Canada: a quasi-experimental study. BMC Public Health 15. https://doi.org/10.1186/s12889-015-2116-4