In recent years in Japan, there have been many debates of setting highway toll charges as a part of policy discussions. However, although these debates should be analyzed objectively based on quantitative analysis, it cannot be denied that the psychological impact of the proposals is being given more priority. Considering that highways are a type of public infrastructure, it is appropriate that...

This paper explores the notion and usefulness of nonstationary velocity profiles for high priority emergency vehicle transit on automated highways. These profiles are intended for use in the link layer of the hierarchical control architecture defined by the California Partners for Automated Transit and Highways (PATH) program. A non-stationary velocity profile which can be used to circulate tra...

This paper reports the findings from a study aimed at examining the effectiveness of shoulder rumble strips in reducing run-off-the-road (ROR) crashes on two-lane rural highways using the empirical Bayes (EB) before-and-after analysis method. Specifically, the study analyzed the effects of traffic volume, roadway geometry and paved right shoulder width on the effectiveness of shoulder rumble st...

The nation’s network of highways plays a vital role in the U.S. economy; private commercial activity and people’s daily lives depend on that transportation infrastructure. In 2007, the public sector spent $146 billion to build, operate, and maintain highways in the United States. About three-quarters of that total was provided by state and local governments. One-quarter was provided by the fede...

Multi-agent path-finding (MAPF) is important for applications such as the kind of warehousing done by Kiva systems. Solving the problem optimally is NP-hard, yet finding lowcost solutions is important. Bounded-suboptimal MAPF algorithms, such as enhanced conflict-based search (ECBS), often do not perform well in warehousing domains with many agents. We therefore develop bounded-suboptimal MAPF ...

Highway planning is a process wherein a highway network con­ sidered adequate to meet both the present and future traffic demands of an auto-oriented, ever-growing populace is visualized. It is also the process in which a procedure designed to implement the plan should be formulated. The first step in the planning process is the determination of high­ way needs. The elimination of these needs r...