An important task for progress in IVHS (Intelligent Vehicle Highway Systems) is the development of methods for real-time traffic scene analysis. All three major applications of IVHS ADIS (Advanced Driver Information Systems), ATMS (Advanced Traffic Management Systems), and AVCS (Automated Vehicle Control Systems) could benefit from accurate, high-level descriptions of traffic situations. For ex...

We present longitudinal control laws for vehicles moving in an Intelligent Vehicle Highway System (IVHS) [1] [2]. In particular the scenario where cars move along the highway in tightly spaced platoons is considered. We present control schemes that perform the major longitudinal tasks that will be required from the lead vehicle of a platoon moving on an automated highway. More speci cally schem...

Traffic congestion is increasingly growing, especially in urban areas. One of the solutions for this problem is automated traffic. Many research programs have been carried out or are currently underway to implement automated road or highway systems, based on automatically controlled platoons of vehicles. The aim is to improve the flow and the safety of traffic by reducing accidents, while reduc...

T his paper evaluates the entrance capacity and queueing delay for Automated Highway Systems through use of simulations and analytical modeling. Queueing statistics are also used to determine the sustainable capacity of alternative concepts, taking trip length distribution and spacing between ramps into consideration. Based on safety-spacing head­ ways (produced in a separate analysis), the mos...

Increasing highway traffic congestion and real estate costs that limit the building of new highways has brought about a renewed interest in an Automated Highway System (AHS) where the vehicle steering task (“lateral control”) and the braking/throttle tasks (“longitudinal control”) are taken over by computers to increase the throughput of existing highways. Since safety plays a key role in the d...