Abstract
Mixed road traffic with a high proportion of motorcycles, which is a typical vehicle composition in Hochiminh City and other cities in Vietnam. Due to the nature of such a traffic stream, the method commonly used in evaluating traffic signals cannot be adopted here. Motorcycles are performing differently to traffic signals compared with passenger cars; in particular, their advanced mobility and flexibility resulted in a failure of the application of traditional traffic signal evaluation tools. This paper attempts to report a new approach for the issue; using a modified Passenger Car Equivalent unit (PCE) to convert the number of motorcycles into standard car unit. Then aaSIDRA is applied to conduct a standard evaluation process on the performance of traffic signal designs; a range of output from aaSIDRA can be used to compare the differences with different signal settings.
