Development Of Capacity Model For Arterial Road Under Heterogeneous Traffic Condition –A Case Study Of Rajkot City

Abstract

Due to the fast expansion in income and automobile ownership among urban residents, traffic on urban highways is escalating. The issues brought on by the increased traffic have likewise gotten greater and more complicated. India's city streets in general transport heterogeneous traffic, which consists of a variety of vehicles including cars, buses, trucks, motorcycles, light-duty trucks, auto rickshaws, pedal bicycles, hand-drawn carts, animal-drawn carts, and more. The urban diverse traffic flow is impacted by these vehicles' various speeds, sizes, load carrying capacity, and passenger capacities, among other factors. Non-uniform carriageway width over the length of the road is typical, particularly in developing nations. The difference in roadway width also causes the traffic stream speed to experience higher levels of congestion throughout the link's length. The most significant component that directly influences the behaviour of the traffic stream is the traffic mix. Since the majority of the traffic is made up of the same sorts of vehicles, homogenous traffic does not experience sudden changes in its features. In contrast, heterogeneous traffic consists of a mix of several vehicle kinds, including cars, trucks, buses, LCVs, two- and three-wheelers, bicycles, and others. These vehicles vary in terms of their size, form, power, ability to transport a load, and speed. Because of this, the properties of the traffic stream for heterogeneous traffic vary remarkably. When there are the most two-wheelers in the traffic composition, the speed and flow values are greater. Due to the fact that two-wheelers take up less space than cars, buses, and trucks, this is the case. Additionally, the needed distance for a standstill is quite short since two-wheelers can be stopped much more quickly than buses. When two-wheelers are operated on urban streets, speed is also increased.