Lessons Learned from a Review of Evaluations of Automated Highway Systems

A review of the literature pertaining to automated highway systems (AHSs) has resulted in the documentation of lessons learned from major European and U.S. evaluations of AHSs that cover the AHS benefit assessment process. The lessons learned will be assimilated into an evaluation framework and plan, with the aim of adopting those aspects of past and present evaluations and avoiding known pitfalls. At the same time, key findings of previous AHS studies have been documented. The three products of the literature survey are as follows: a characterization of the coverage of nine categories of AHS evaluations; the identification of a sequence of evaluation phases, as planned for in nine major AHS studies; and the documentation of critical inputs to a plan for evaluating AHS concepts.