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Designing and Maintaining a Pedestrian-Friendly Work Zone. Gerald L. Ullman, Ph.D., P.E. Texas Transportation Institute. The MUTCD is clear!.

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designing and maintaining a pedestrian friendly work zone

Designing and Maintaining a Pedestrian-Friendly Work Zone

Gerald L. Ullman, Ph.D., P.E.

Texas Transportation Institute

the mutcd is clear
The MUTCD is clear!

The needs and control of all road users (motorists, bicyclists, and pedestrians…) through a TTC zone shall be an essential part of highway construction, utility work, maintenance operations…

pedestrians should
Pedestrians should…
  • …not be led into conflicts with work vehicles, equipment or operations
  • …not be led into conflicts with vehicles moving through or around work site
  • …be provided with a reasonably safe, convenient, and accessible path
  • …not have their route severed due to parked vehicles or equipment
pedestrian tcp design checklist
Pedestrian TCP Design Checklist
  • Diversion Route Considerations
  • Pedestrian/Work Area Separation
  • Pedestrian/Vehicle Separation
  • Pathway Width and Surface Needs
  • Detectable Edging Requirements
tcp design checklist cont d
TCP Design Checklist (cont’d)
  • Canopied Walkway Needs
  • Sight Line Maintenance
  • Provision of Pedestrian Guidance Information
  • Other Intersection Needs
  • Mitigate Path Obstructions
  • Access to Transit Stops, Businesses, Residences
diversion route considerations
Diversion Route Considerations

Priorities:

  • Parking lane next to work site
  • Closed travel lane next to work site (if multi-lane facility)
  • Sidewalk or path across the street

In some cases, a temporary traffic barrier may be needed

pedestrian work area separation
Pedestrian/Work Area Separation
  • Positively protect excavations or drop-offs
  • Fences or barriers to prevent pedestrian access into work site

Fences or barriers should be

high enough to prevent climbing over

pedestrian vehicle separation
Pedestrian/Vehicle Separation
  • Barriers may be needed
    • High-speed traffic situations
    • Designed to prevent intrusions
  • Barricades or channelizing devices may be sufficient
    • Detectable edging required
    • Continuous path provided
pathway width and surface needs
Pathway Width and Surface Needs
  • 5 ft width desirable
  • If less than 5 ft, provide a 5 ft by 5 ft space every 200 ft along route
  • 3 ft absolute minimum, unless special provisions provided for wheelchairs
  • Path must be smooth, continuous, hard surface
detectable edging
Detectable Edging
  • Continuous plastic, metal, wood, etc.
  • Bottom rail a maximum of 6 inches above ground
  • Rail at hand height desirable
canopied walkway
Canopied Walkway
  • Required if potential for falling debris
  • Lighting may be required if intended for use at night
maintaining sight lines
Maintaining Sight Lines
  • Drivers and pedestrians need to see each other at crossings
  • Features to check:
    • Fences
    • Parking
    • Signs
    • Bridge abutments
    • Work vehicles and equipment
pedestrian information needs
Pedestrian Information Needs
  • Advance information about sidewalk closures
  • Clear and positive guidance provided through and around work area
  • Guidance back to original route provided

Ask yourself: What would I tell a driver?

pedestrian information cont d
Pedestrian Information (cont’d)

Message Design Tips:

  • Provide distances (blocks or feet)
  • Describe desired action when possible (“USE OTHER SIDE”)
  • Orange and black = work zone
other intersection needs
Other Intersection Needs
  • Temporary crosswalks
  • Traffic signal adjustments
    • Pedestrian clearance
    • Maintaining accessibility
mitigate path obstructions
Mitigate Path Obstructions
  • No scaffolding, fencing, etc., protruding into path
  • No signs lower than 7 ft extending into path
access considerations
Access Considerations
  • Transit stops
  • Access to businesses, residences also need to be considered
in field construction reviews
In-Field Construction Reviews
  • Check TCP design at beginning of project, after each phase change
  • Include as part of regular inspector reviews throughout project
  • Be vigilant for “accidental” impacts to pedestrians
for more information
For more information….
  • Checklist for Accommodating Pedestrians in Temporary Traffic Control Areas, December 2007, http://tti.tamu.edu/documents/0-5237-P1.pdf
  • FHWA Work Zone Safety Grant Program http://www.workzonesafety.org/fhwa_wz_grant/atssa/atssa_pedestrian_checklisthttp://www.workzonesafety.org/fhwa_wz_grant/atssa/atssa_guidance_sheet

Gerald Ullman

TTI

(979) 845-9908

g-ullman@tamu.edu