Show simple item record

dc.contributor.authorWilliams, Brian
dc.contributor.authorGibbons, Ronald B.
dc.contributor.authorFlintsch, Alejandra Medina
dc.description.abstractHeavy fog presents a significant safety hazard to drivers by reducing their ability to see the roadway and other vehicles. Even so, drivers often fail to adjust their speed to account for the reduced visibility, resulting in stopping distances that exceed visibility distance. Active delineators, or in-pavement light emitting diode (LED) markers, are an emerging technology which can be used to assist drivers in traveling through fog-prone areas by marking road or lane boundaries. However, there is a lack of research indicating how the presence of active delineators might also affect a driver’s behavior. This study sought to examine how the presence of active delineators in fog might affect drivers’ speed. Three lighting patterns and two brightness levels were tested. In daytime conditions, the delineators had no effect on speed. During nighttime conditions, participants often drove faster when the active delineators were present. Participants felt that the active delineators were helpful for navigating through the fog in both daytime and nighttime conditions, but preferred the higher brightness settings in the daytime.en_US
dc.publisherNational Surface Transportation Safety Center for Excellenceen_US
dc.rightsCreative Commons CC0 1.0 Universal Public Domain Dedicationen
dc.subjecttransportation safetyen_US
dc.subjectroadway delineationen_US
dc.subjectin-pavement markersen_US
dc.subjecthighway designen_US
dc.titleActive and Adaptive Roadway Delineation Systemsen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

Creative Commons CC0 1.0 Universal Public Domain Dedication
License: Creative Commons CC0 1.0 Universal Public Domain Dedication