Traffic Breakdown Mechanism of Hidden Bottlenecks on an Arterial Road

Traffic congestion has been a serious social and technical problem since the early year?s rapid motorization in Banda Aceh, Aceh Province Indonesia. Urban arterial performance becomes the crucial concerns of many traffic engineers. This study examined the impact of presence of u-turn and on-street parking on deterioration both travel speed and operated capacity. Arterial performances were analyzed using oblique cumulative plots and breakdown method as known as dynamic capacity methods.