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Genetic algorithm for multiple bus line coordination on urban arterial.

Yang Z, Wang W, Chen S, Ding H, Li X - Comput Intell Neurosci (2015)

Bottom Line: Bus travel time on road section is defined and analyzed with the effect of multiple bus lines.An analytical model is formulated to calculate the total red time a bus encounters when travelling along the arterial.The results show that the methods in this paper can reduce total red time of all the bus lines by 31.9% on the object arterial and thus improve the traffic efficiency of the whole arterial and promote public transport priority.

View Article: PubMed Central - PubMed

Affiliation: Jiangsu Key Laboratory of Urban ITS, Southeast University, 2 Si Pai Lou, Nanjing 210096, China ; Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, 2 Si Pai Lou, Nanjing 210096, China.

ABSTRACT
Bus travel time on road section is defined and analyzed with the effect of multiple bus lines. An analytical model is formulated to calculate the total red time a bus encounters when travelling along the arterial. Genetic algorithm is used to optimize the offset scheme of traffic signals to minimize the total red time that all bus lines encounter in two directions of the arterial. The model and algorithm are applied to the major part of Zhongshan North Street in the city of Nanjing. The results show that the methods in this paper can reduce total red time of all the bus lines by 31.9% on the object arterial and thus improve the traffic efficiency of the whole arterial and promote public transport priority.

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Illustration of bus time calculation model at traffic signal.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig3: Illustration of bus time calculation model at traffic signal.

Mentions: Figure 3 illustrates the travelling track of a bus in one direction. Timing plan and offset of each traffic signal are also displayed for red time calculation. Cumulative time CTi is used to denote the total travel time prior to signal i, including total bus travel time on previous road section and total red time at previous signals. Thus cumulative time CTi can be calculated as follows (CT1 = 0):(1)CTi=∑k=1i−1Tk+rk,where Tk refers to the bus travel time on previous section k and rk refers to the red time a bus encounters at previous signal k.


Genetic algorithm for multiple bus line coordination on urban arterial.

Yang Z, Wang W, Chen S, Ding H, Li X - Comput Intell Neurosci (2015)

Illustration of bus time calculation model at traffic signal.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4309291&req=5

fig3: Illustration of bus time calculation model at traffic signal.
Mentions: Figure 3 illustrates the travelling track of a bus in one direction. Timing plan and offset of each traffic signal are also displayed for red time calculation. Cumulative time CTi is used to denote the total travel time prior to signal i, including total bus travel time on previous road section and total red time at previous signals. Thus cumulative time CTi can be calculated as follows (CT1 = 0):(1)CTi=∑k=1i−1Tk+rk,where Tk refers to the bus travel time on previous section k and rk refers to the red time a bus encounters at previous signal k.

Bottom Line: Bus travel time on road section is defined and analyzed with the effect of multiple bus lines.An analytical model is formulated to calculate the total red time a bus encounters when travelling along the arterial.The results show that the methods in this paper can reduce total red time of all the bus lines by 31.9% on the object arterial and thus improve the traffic efficiency of the whole arterial and promote public transport priority.

View Article: PubMed Central - PubMed

Affiliation: Jiangsu Key Laboratory of Urban ITS, Southeast University, 2 Si Pai Lou, Nanjing 210096, China ; Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, 2 Si Pai Lou, Nanjing 210096, China.

ABSTRACT
Bus travel time on road section is defined and analyzed with the effect of multiple bus lines. An analytical model is formulated to calculate the total red time a bus encounters when travelling along the arterial. Genetic algorithm is used to optimize the offset scheme of traffic signals to minimize the total red time that all bus lines encounter in two directions of the arterial. The model and algorithm are applied to the major part of Zhongshan North Street in the city of Nanjing. The results show that the methods in this paper can reduce total red time of all the bus lines by 31.9% on the object arterial and thus improve the traffic efficiency of the whole arterial and promote public transport priority.

Show MeSH