Abstract
Knowing the turning rates at an intersection can contribute to the improvement of signal control parameters and correct estimation of vehicle delays. This study proposes a methodology for estimating turning rates at an intersection under oversaturated traffic conditions. Data from detectors and infrared beacons (probe data) are used with a traffic simulator to reproduce average probe travel times for different turning ratio values. Turning rates were estimated by observing the change in the parameters describing the linear relationship between the entry time and average probe travel time for different turning rates and comparing them with the values from virtual probe and detector data. The methodology works well with simulated data.
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