ABSTRACT

The paper discusses the major limitations of the existing speed–area occupancy curve for multi-class traffic. Any driver will react not to the actual area occupancy, but to a perceived area occupancy based on the spatial arrangement and percentage composition of vehicles. To address multi-class traffic peculiarities, this paper proposes a formulation for perceived area occupancy. Traffic flow is simulated on a road section using a calibrated microsimulation model for Electronics City, Bangalore, India. The speed–concentration curves are plotted for various functional forms using density, area occupancy, and perceived area occupancy. Analysis results showed that the speed–perceived area occupancy curve could capture the speed variation better than by the existing functional forms and could predict traffic flow significantly better than with that by speed–density curves when used with the fundamental equation of traffic flow.

摘要

本文讨论了现有速度-面积占用曲线对多类交通的主要限制。任何驾驶员都不会对实际的区域占用率做出反应，而是对基于车辆的空间布置和百分比组成的感知区域占用率做出反应。为了解决多类交通的特殊性，本文提出了一种感知区域占用率的公式。使用经过校准的印度班加罗尔电子城微仿真模型在路段上模拟交通流量。使用密度、面积占用率和感知面积占用率绘制各种功能形式的速度-集中度曲线。