Civil Engineering Congestion on roadways is a big problem that no one wants to be part of. Drivers don t want to spend more time that they have to on the roads.
Congestion is also a problem for left turning vehicles at signalized intersections.
Heavy left turns at some locations leave vehicles waiting in long queues and sometimes not getting the chance to make their left turn on the first cycle. In order to increase left turn capacity at signalized intersection, triple left turn lanes have been installed at certain intersections. The idea is to have three lanes that are turning left at the intersection, thus allowing more vehicles to turn at the signal light. Being a fairly recent idea, some people are reluctant to use them. This report will develop a data collection and analysis methodology and evaluate traffic models to see how the performance of the triple left turn lanes can be analyzed.