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Optimizing Median Barrier Systems: Enhancing Road Safety

Explore the importance of median barriers in preventing cross-over crashes, considerations like median width, traffic volume, cross slope, and more. Learn about various types of median barriers and their optimal locations and end treatments.

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Optimizing Median Barrier Systems: Enhancing Road Safety

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Presentation Transcript

  1. Median Barriers RDG Chapter 6

  2. Warrants for Median Barriers • Prevent cross-over crashes • Median width and traffic volumes are variables

  3. Figure 6.1 Figure 6.1 *Average Daily Traffic(Thousands) Median Width (Feet) *Based on a 5-Year Projection

  4. Other Warrant Considerations for Median Barriers • Median Cross Slope • Roadway Curvature • Vehicle Speed and Traffic Mix

  5. Median Cross Slope

  6. Roadway Curvature

  7. Vehicle Speed and Traffic Mix

  8. Median Barrier Systems • 3 or 4-Strand Cable • W-Beam (weak post) • Box-Beam • W-Beam (strong post) • Thrie Beam • Modified Thrie Beam • Concrete Safety Shape

  9. Rude Awakening

  10. New Vs. Old Design

  11. NJ Concrete Barrier

  12. 42 inch safety shape

  13. Constant slope barriers

  14. Ultimate wall

  15. Median Barrier Location • Along Centerline • Adjacent to Higher Roadway • Paired Roadside Barriers

  16. End Treatments for Median Barriers • Flared • Tapered • Anchored In Backslope • Shielded With Crash Cushion

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