Abstract
Vehicle stops estimation is one of the important parameters to assess the performance of a signalized road intersection. Canadian Capacity Guide provides a formula that can estimate number of vehicles that stops at least once due to the traffic signal. This study reviews the applicability of this formula for non-lane based traffic. The formula is segmented into two periods to check the estimation of stops during red period and green period. It is found that the formula underestimates the number of stops during red period. Also, the formula estimated number of stops is significantly higher during the green period. As traffic operation and vehicle maneuver of non-lane based traffic are much different from lane based disciplined traffic, the formula cannot predict vehicle stops accurately. Therefore, the estimation of vehicle stops by Canadian Capacity Guide formula is found to deviate considerably from field observed number of stops of vehicles. Thus, a modified regression formula is provided that can estimate the number of stops of vehicles for non-lane based traffic operation. The modified formula fits fairly good with the local traffic condition.
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