Dynamic signal timing algorithm at single-point intersection based on queuing condition

LI Ming-li; ZHAO Xiang-mo; ZHANG Li-chuan

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LI Ming-li, ZHAO Xiang-mo, ZHANG Li-chuan. Dynamic signal timing algorithm at single-point intersection based on queuing condition[J]. Journal of Traffic and Transportation Engineering, 2008, 8(5): 100-103.

Citation:

LI Ming-li, ZHAO Xiang-mo, ZHANG Li-chuan. Dynamic signal timing algorithm at single-point intersection based on queuing condition[J]. Journal of Traffic and Transportation Engineering, 2008, 8(5): 100-103.

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Dynamic signal timing algorithm at single-point intersection based on queuing condition

School of Information Engineering, Chang'an University, Xi'an 710064, Shaanxi, China

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Author Bio:
LI Ming-li (1964-), male, lecturer, +86-29-82334548, dzxxsys@chd.edu.cn
Received Date: 2008-03-21
Publish Date: 2008-10-25

Abstract

Abstract

The queuing states in the green end were taken as objective, the dynamic signal timing at single-point intersection under the control of two-phase signal was studied, a queuing model was built according to the queuing and discharging process, and the effects of signal cycle, split and arrival ratio on the queuing states were analysed.A signal timing simple algorithm following the fluctuation of arrival ratio was put forward when two phases were in little under-saturation queuing states, the cycle was calculated according to the total ratio of flow volume, and the split of main phase was adjusted depending on the higher ratio of flow volume.Simulation result indicates that the cycle slowly changes both phases queuing conditions in the same direction, the split changes them in the reverse direction, and the arrival ratio only alters the queuing conditions of corresponding phases.When saturation flow rates are 0.50 pcu·s^-1, the times of yellow and green former losses are 4 s, and the arrival ratio varies from 0.10 to 0.26 pcu·s^-1, two phases are in little under-saturation queuing states, so the algorithm is effective.
- traffic information control,
- two-phase single-point intersection,
- queuing condition,
- signal timing algorithm,
- arrival ratio,
- signal cycle,
- split

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References(11)

References

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