Limits...
Low Emissions and Delay Optimization for an Isolated Signalized Intersection Based on Vehicular Trajectories.

Lin C, Gong B, Qu X - PLoS ONE (2015)

Bottom Line: This paper first defines vehicular trajectories and the calculation of vehicular emissions based on VSP.Finally, one typical intersection of Changchun is selected to verify the model proposed in this paper; its performance efficiency is also compared using simulations in VISSIM.The results of this study show that the proposed model can significantly reduce vehicle delay and traffic emissions simultaneously.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun, 130022, China.

ABSTRACT
A traditional traffic signal control system is established based on vehicular delay, queue length, saturation and other indicators. However, due to the increasing severity of urban environmental pollution issues and the development of a resource-saving and environmentally friendly social philosophy, the development of low-carbon and energy-efficient urban transport is required. This paper first defines vehicular trajectories and the calculation of vehicular emissions based on VSP. Next, a regression analysis method is used to quantify the relationship between vehicular emissions and delay, and a traffic signal control model is established to reduce emissions and delay using the enumeration method combined with saturation constraints. Finally, one typical intersection of Changchun is selected to verify the model proposed in this paper; its performance efficiency is also compared using simulations in VISSIM. The results of this study show that the proposed model can significantly reduce vehicle delay and traffic emissions simultaneously.

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Optimized timing plan.
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pone.0146018.g007: Optimized timing plan.

Mentions: Based on the optimization algorithm and real survey data, C = 176 yields the minimum PI. This optimization cycle is less than the original (216 s) and within the limits defined above, which allows the driver to accept the longer red light without too much impatience. Next, the equal saturation principle is used to calculate the optimal timing plan. The original timing plan and the optimized timing plan are shown in the Figs 6 and 7 as below.


Low Emissions and Delay Optimization for an Isolated Signalized Intersection Based on Vehicular Trajectories.

Lin C, Gong B, Qu X - PLoS ONE (2015)

Optimized timing plan.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4697823&req=5

pone.0146018.g007: Optimized timing plan.
Mentions: Based on the optimization algorithm and real survey data, C = 176 yields the minimum PI. This optimization cycle is less than the original (216 s) and within the limits defined above, which allows the driver to accept the longer red light without too much impatience. Next, the equal saturation principle is used to calculate the optimal timing plan. The original timing plan and the optimized timing plan are shown in the Figs 6 and 7 as below.

Bottom Line: This paper first defines vehicular trajectories and the calculation of vehicular emissions based on VSP.Finally, one typical intersection of Changchun is selected to verify the model proposed in this paper; its performance efficiency is also compared using simulations in VISSIM.The results of this study show that the proposed model can significantly reduce vehicle delay and traffic emissions simultaneously.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun, 130022, China.

ABSTRACT
A traditional traffic signal control system is established based on vehicular delay, queue length, saturation and other indicators. However, due to the increasing severity of urban environmental pollution issues and the development of a resource-saving and environmentally friendly social philosophy, the development of low-carbon and energy-efficient urban transport is required. This paper first defines vehicular trajectories and the calculation of vehicular emissions based on VSP. Next, a regression analysis method is used to quantify the relationship between vehicular emissions and delay, and a traffic signal control model is established to reduce emissions and delay using the enumeration method combined with saturation constraints. Finally, one typical intersection of Changchun is selected to verify the model proposed in this paper; its performance efficiency is also compared using simulations in VISSIM. The results of this study show that the proposed model can significantly reduce vehicle delay and traffic emissions simultaneously.

Show MeSH
Related in: MedlinePlus