VDOT Access Management Regulations and Standards Part 2

Abstract:

Evaluation of Spacing Standards: 2011

  • Original intent - periodic review.
  • 75+ exceptions approved during past 3 years
  • Input from VDOT staff and transportation consultants
  • Updates to standards effective Jan 2012
  • Reduce standards with numerous exceptions
  • Lower  ½ mile signal spacing – speed limits < 50 mph
  • Eliminate urban/rural criteria
  • Separate spacing for intersections vs. full access entrances
  • Reduce intersection spacing near interchange ramps
  • 2008 VA Tech study on crash rates near ramps 

 

2008 VA Study found the crash rate:

  • Is dramatically lower at 750 ft and 990 ft spacing from ramps
  • Is minimal at 1,320 ft
  • No safety improvement:  2,640 ft spacing vs. 1,320 ft
Slide List:
  1. Virginia’s Access Management Regulations and Standards
  2. Virginia’s Systems of State Highways
  3. Access Management Requirements
  4. VDOT Standards for
  5. Corner Clearance
  6. Shared Entrances
  7. Vehicular & Pedestrian Circulation between Adjoining Properties
  8. Control Entrance Movements
  9. VDOT Criteria for Spacing Standards
  10. Regulatory Exceptions to the Spacing Standards
  11. Evaluation of Spacing Standards: 2011
  12. Access near Interchange Ramps
  • Posted on: Fri, 08/30/2013 - 17:56
  • By: fbroen
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