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An approach to the veriication of hybrid systems using optimal control principles is introduced. Its advantages and disadvantages when compared with conventional , automatic veriication techniques are highlighted. The application of the new approach is illustrated by means of two motivating examples, one from the area of automated highway systems and the other from the timed automata veriicatio...

Automatic vehicle following is an important feature of a fully or partially automated highway system (AHS). The on-board control should be able to accept and process inputs from the driver, infrastructure, other vehicles, perform diagnostics, provide appropriate commands actuators so that resulting motion safe compatible with AHS objectives. purpose this article design test in order achieve ful...

I want to provide three perspectives on hierarchical architectures. The first focuses on how the space of automated highway system designs was structured. The second describes two hierarchically-layered designs. The third suggests a theoretical framework prompted by these two stories. I will end with a brief video that describes elements of one AHS design.

This paper presents a method for analysis of automated highway throughput for AHS designs, including those with platooning. Simulation results are presented which show that increased information leads to higher throughput, and that a platooning design will have higher throughput than any individual vehicle design.

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The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the State of California. EXECUTIVE SUMMARY The concept of automated highway system (AHS) was motivated primarily by its potential for large capacity and safety gains without requiri...

The development of two tools to study the performance of automated highways is presented. The first is a spacing tool that produces the minimum spacing necessary for two vehicles not to collide, as a function of their initial velocities and their deceleration capabilities. The second tool investigates the multiple collisions that may occur in a string of vehicles if the requirements made by the...

A combination of market forces, cost constraints, and other factors necessitate incremental evolution of a fully automated highway system (AHS) rather than instantaneous deployment. Thus, an understanding of the interdependencies among required AHS functional capabilities is essential for planning. This paper proposes a set of three AHS functional evolution reference models that include essenti...

The operation and transit of emergency vehicles on an automated highway system (AHS) designed under the control architecture proposed in the California Partners for Advanced Transit and Highways (PATH) program is described. The term emergency vehicles is used in a general sense to describe vehicles, such as police cars, ambulances, and tow trucks, that may service faults inside or outside the A...