intersections

Risk-Oriented Design Approach

  • Posted on: Sun, 10/13/2013 - 22:19
  • By: shroedermay
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Common Reasons to Consider Exceptions

  • Impacts to the natural environment

  • Social or right-of-way impacts

  • Preservation of historic or cultural resources

  • Sensitivity to context or accommodating community values

  • Construction or right-of-way costs

 

Risk Management Characteristics

  • Explicitly addresses uncertainty

  • Based on the best available information

  • Part of the decision-making process

Access Management Solutions with Roundabouts

  • Posted on: Sun, 10/13/2013 - 22:10
  • By: shroedermay
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Well-designed Modern Roundabouts enhance the achievement of Access Management principles

  • Maintain Integrity of Arterials

  • Balance Mobility and Access

  • Improve Safety

  • Reduce
    Congestion

  • Extend the life of
    Infrastructure

 

 

Roundabout Operational & Safety Characteristics:

  • Driveway and intersection spacing versatility

  • Geometric flexibility (properly designed)

  • Less queuing

Access Management Considerations at Four Innovative Intersections

  • Posted on: Sun, 10/13/2013 - 22:06
  • By: shroedermay
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Topics

  • New Jersey Jughandle Intersection (NJJI)

  • Displaced Left Turn Intersection (DLF)

  • Median U-Turn Intersection (MUT)

  • Restricted Crossing U-Turn Intersection (RCUT)

Summary

  • All unconventional intersection designs are conceived to take advantage of the local traffic pattern

  • Their main design objectives are to improve LOS of critical movements, maintain or improve overall safety at main intersection, and generate tolerable delays to non-critical movements

A Programmable Procedure to Calculate Number of Traffic Conflict Points at Highway Intersections

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Traffic conflict points at intersections are the points at which traffic movements intersect (including crossing, merge, and diverge). Numbers and distribution of conflict points have been used to evaluate intersection access management designs and safety performance. Traditionally, determination of numbers of conflict points for different traffic movements has been based on manual methods, which causes the difficulty for computerized procedures to evaluate safety performance of different access management designs.

Early Investigation of Access Points near Signalized Intersections

  • Posted on: Sat, 07/06/2013 - 18:57
  • By: fbroen
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Objective • Develop a statistical model to estimate the number of access point – related collisions occurring at access points near signalized intersections • Provide guidelines for site planners to distinguish higher collision sites from lower collision sites and eventually prevent constructing these sites Slide Titles Early Investigation of Access Points near Signalized Intersections Access Point Safety Objective Scope Literature Review Data Preparation Modeling Methodology Collision Model Higher Collision Sites Higher Collision Analysis Contributing Factors Recommended Guideline Research