Samenvatting
Recent research has determined that run-off-the-road (ROTR) crashes contribute to 33% of all highway fatalities in the U.S. Many types of continuous shoulder rumble strips (CSRS) have been used to reduce such crashes, but 2 major issues have been noted: 1) although the rolled type of CSRS has been used widely in the U.S., the optimal pattern and its tactile/audible characteristics remained unknown, and 2) statistical analysis of the effectiveness of the optimal pattern on safety and the economy had not been conducted. This article clarifies these issues, discusses findings, and suggests further research needs in the area of ROTR crashes and CSRS safety devices. (Author/Publisher)