Adequacy of TRANSYT-7F and Synchro models along a major arterial in Saudi Arabia

作者：Ratrout Nedal T^*; Abu Olba Maen Abdullatif

来源：Canadian Journal of Civil Engineering, 2009, 36(1): 95-102.

DOI：10.1139/L08-120

• Signal optimization
• TRANSYT-7F calibration
• Synchro calibration
• traffic simulation

The TRANSYT-7F and Synchro models are used in developing optimal timing plans in the city of Al-Khobar, Saudi Arabia. This paper evaluates the adequacy of both TRANSYT-7F and Synchro under local traffic conditions by comparing queue lengths observed along a major arterial in the study area with simulated queues. The models were then calibrated to produce simulated queue lengths which are as close as possible to the observed ones. A clear difference was found between queue lengths estimated by Synchro and TRANSYT-7F. A queue length calibration process was accomplished for TRANSYT-7F by using platoon dispersion factor values of 20 and 35 for through and left-turning traffic, respectively. Synchro calibration was unsatisfactory. The simulated queue lengths could not be calibrated in a meaningful way to resemble the observed queue lengths. Regardless of this, both models produced comparable optimal signal timing plans.

• 出版日期2009-1
• 单位中国石油大学（北京）