Intelligent transportation systems (ITS) have enhanced the way we can deal with road safety issues. Many new in-vehicle systems focus on accident prevention by facilitating the driving task. One such driving aid is an in-vehicle collision avoidance warning system (IVCAWS), used to alert the driver to an impending collision. Our study evaluated the effects of an imperfect IVCAWS both on driver h...

The morning commute problem for a single bottleneck, introduced in Vickrey (1969), is extended to model mode choice in an urban area with time-dependent demand. This extension recognizes that street space is shared by cars and public transit. It is assumed that transit is operated independently of traffic conditions, and that when it is operated it consumes a fixed amount of space. As a first s...

Headway is a safety measure commonly used to investigate driving behaviour and driver performance. Its purpose reflect the following distance or time between leading vehicle in traffic. It therefore associated with drivers’ response time, such as braking swerving, during critical events. In literature, headway are defined different ways, despite standard definitions traffic engineering which pr...

The primary challenge for an urban bus system is to maintain constant headways between successive buses. Most bus systems try to achieve this by adherence to a schedule; but this is undermined by the tendency of headways to collapse, so that buses travel in bunches. To counter this, we propose a new method of coördinating buses. Our method abandons the idea of a schedule and even any a priori t...

We focus in this article on the analysis of an acceleration law for a following autonomous vehicle with constant time headway goal. We rst deene a function that measures the positioning of the following vehicle compared to the leading vehicle, w.r.t. the desired time headway. We study the convergence and limit of this positioning function, and prove the asymptotic stability of our acceleration ...

In the current study we examined the relationship between drivers’ eye movement patterns and driving performance in a dual-task driving paradigm. Drivers performed two tasks in a driving simulator. In a car following task, drivers were asked to maintain a constant headway from a leading vehicle as it varied its speed. In the second task (light detection task), drivers tried to detect changes in...

Irregular headways could reduce the public transit service level heavily. Finding out the exact causes of irregular headways will greatly help to develop efficient strategies aiming to improve transit service quality. This paper utilizes bus GPS data of Harbin to evaluate the headway performance and proposes a statistical method to identify the abnormal headways. Association mining is used to d...

This research paper deals with the design of adaptive cruise control (ACC) which was implemented on a passenger car using PID controller. An important feature of the newly based adaptive cruise control system is that, its ability to manage a competent inter-vehicle gap based on the speed of host vehicle and headway. There are three major inputs to the ACC system, that is, speed of host vehicle ...