Moselakgomo, MNaidoo, MLetebele, MO2015-10-302015-10-302015-07Moselakgomo, M, Naidoo, M and Letebele, MO. 2015. indicative effects of inefficient urban traffic flow on fuel cost and exhaust air pollutant emissions. In: The 34th Southern African Transport Conference, CSIR International Convention Centre, Pretoria, 6-9 July 2015, 6pphttp://hdl.handle.net/10204/8208This is the Abstract only. The fulltext of the paper can be found at the SATC website or UP repository.Poor urban traffic management such as poor intersection controls, congestions, illegal roadway blockages and construction works causes “stop-go” driving conditions with excessive idling resulting in wasted fuel and increased air pollutant emissions (CO(sub2), CO, NOx, HC, etc.) during idling conditions and acceleration from a stop position due to more energy required to move vehicles from a halt. In this study the effects of traffic signal coordination on fuel cost and gas emissions were investigated by comparing the amount of idling time on streets with coordinated signals to those with uncoordinated signals during the off peak period. It was found that signal coordination can reduce the idling fuel cost by more than 25 cents per kilometre in the CBDs. The reductions in idling gas emissions were found to be 77% for both CO and HC and 80% CO(sub2). These are significant reductions if the whole CBD network and all the vehicles within the network per annum are taken in to account.enUrban traffic managementThe 34th Southern African Transport Conference (2015)Air pollutant emissionsInefficient urban traffic flowFuel costsConference PresentationMoselakgomo, M., Naidoo, M., & Letebele, M. (2015). The indicative effects of inefficient urban traffic flow on fuel cost and exhaust air pollutant emissions. http://hdl.handle.net/10204/8208Moselakgomo, M, M Naidoo, and MO Letebele. "The indicative effects of inefficient urban traffic flow on fuel cost and exhaust air pollutant emissions." (2015): http://hdl.handle.net/10204/8208Moselakgomo M, Naidoo M, Letebele M, The indicative effects of inefficient urban traffic flow on fuel cost and exhaust air pollutant emissions; 2015. http://hdl.handle.net/10204/8208 .TY - Conference Presentation AU - Moselakgomo, M AU - Naidoo, M AU - Letebele, MO AB - Poor urban traffic management such as poor intersection controls, congestions, illegal roadway blockages and construction works causes “stop-go” driving conditions with excessive idling resulting in wasted fuel and increased air pollutant emissions (CO(sub2), CO, NOx, HC, etc.) during idling conditions and acceleration from a stop position due to more energy required to move vehicles from a halt. In this study the effects of traffic signal coordination on fuel cost and gas emissions were investigated by comparing the amount of idling time on streets with coordinated signals to those with uncoordinated signals during the off peak period. It was found that signal coordination can reduce the idling fuel cost by more than 25 cents per kilometre in the CBDs. The reductions in idling gas emissions were found to be 77% for both CO and HC and 80% CO(sub2). These are significant reductions if the whole CBD network and all the vehicles within the network per annum are taken in to account. DA - 2015-07 DB - ResearchSpace DP - CSIR KW - Urban traffic management KW - The 34th Southern African Transport Conference (2015) KW - Air pollutant emissions KW - Inefficient urban traffic flow KW - Fuel costs LK - https://researchspace.csir.co.za PY - 2015 T1 - The indicative effects of inefficient urban traffic flow on fuel cost and exhaust air pollutant emissions TI - The indicative effects of inefficient urban traffic flow on fuel cost and exhaust air pollutant emissions UR - http://hdl.handle.net/10204/8208 ER -