Comparing Countermeasures for Mitigating Wrong-way Entries onto Limited Access Facilities

Wrong-way crashes are a major cause for safety concerns along freeways and limited-access facilities. Although wrong-way crashes account for a relatively small portion of total crashes, the impact between two cars crashing into each other at high speeds in opposite directions often results in severe injuries or fatalities compared to any other type of crash. Despite providing the necessary “DO NOT ENTER” and “WRONG WAY” signs and pavement markings (wrong-way arrows, etc.), as per the Manual on Uniform Traffic Control Devices (MUTCD), wrong-way entry onto limited-access facilities is still occurring. To seek solutions for mitigating wrong-way driving (WWD), tests involving a number of countermeasures using Intelligent Transportation Systems (ITS) technologies have been conducted through Florida Department of Transportation (FDOT) pilot projects. This project looked to evaluate these WWD countermeasures developed through these pilot projects and come up with recommendations of the most effective and informing WWD countermeasures through analysis of existing data and studies, field testing using focus groups, a public opinion survey, and a human factors approach using driving simulation. The results proved that red Rectangular Rapid Flashing Beacons (RRFBs) is the top countermeasure for mitigating WWD at freeway off-ramps, with wigwag flashing beacons as the second best, and detection-triggered blank-out signs and detection-triggered LED lights around “WRONG WAY” signs (tie) as third best WWD countermeasures. Red flush-mount Internally Illuminated Raised Pavement Markers (IIRPMs) could be considered as a supplemental countermeasure for mitigating WWD at freeway off-ramps. The countermeasure of delineators along off-ramps is the least effective and is not recommended to be used for deterring WWD at freeway off-ramps. This study further confirms that the newly-developed signing and pavement marking standards by FDOT is a very positive countermeasure on arterials to mitigate wrong-way entries onto freeway off-ramps.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 176p

Subject/Index Terms

Filing Info

  • Accession Number: 01635127
  • Record Type: Publication
  • Contract Numbers: BDV25-977-29
  • Created Date: May 24 2017 11:07AM