Draft Temporary Pedestrian Access Route (TPAR) Guidance

1
Draft Temporary Pedestrian Access Route (TPAR)
Guidance

• Ken E. Johnson, PE
• Mn/DOT Office of Traffic, Safety and Technology
• ken.johnson_at_state.mn.us
• 651-234-7386

2
Draft TPAR Guidance

• Located in your folder

Alternatively http//www.dot.state.mn.us/traffice
ng/workzone/ADA/DRAFT-TPARGuidelines.pdf
3
Whats in the TPAR Guidance?

• Mn/DOT ADA Implementation Plan - PROWAG is
  primary guidance for accessible facility design
  on Mn/DOT projects

4
PROWAG/ADAAG Standards
5
2009 Federal MUTCD

• Published by US DOT, FHWA
• Contains standards for all traffic control
  devices on all public roads
• All states must adopt
• Goes through Federal rule-making therefore has
  the weight of law
• All roads open to public travel must comply

6
2009 Federal MUTCD

• Chapter 6D Pedestrian and Worker Safety
• If the Temporary Traffic Control (TTC) zone
  affects the movement of pedestrians, adequate
  pedestrian access and walkways shall be provided.
  If the TTC zone affects an accessible and
  detectable pedestrian facility, the accessibility
  and detectability shall be maintained along the
  alternate pedestrian route.

7
Draft TPAR Guidance

• Identifies and compiles various standards for
  components within an ADA compliant facility.

8
When should the TPAR Guidance be used?

• Length of impact?
• Size of impact?
• Unattended
• Vs.
• Attended

9
TPAR Devices

• Could be constructed on site
• Approved Products List
• Need to develop criteria to fairly evaluate
• TPAR Devices possible categories
• Temporary Walkway Surface
• Detectible Edging
• Handrail
• Temporary Ramp Panels
• Detectible Warning
• Audible Message Device

10
Non-TPAR Devices

• Approved Products List
• Pedestrian Channelizing Devices Possible
  Categories
• Guiderail
• Pedestrian Signs
• Longitudinal Channelizer

11
Approved Products List

• Feedback on devices in demonstration area
• Todays audience
• Focus groups
• Trainers and Pedestrians with Disabilities
• Help Mn/DOT develop criteria to evaluate devices
  fairly

12
TPAR Walkways and Ramp Sections

• May consist of a combination of
• Existing surfaces
• Improved surfaces
• Or portable devices covering existing surfaces
• Remain free of tripping hazards or other objects
• Criteria in guidance document
• Surface, transition joints, width, passing
  spaces, grades, ramps, landings, turning areas,
  detectible edging, and edge protection.

13
TPAR Handrail vs. non-TPAR Guiderail

• Handrails required for steep grades along
  walkways
• Provide required support
• Guiderails provide visual and tactile guidance to
  all pedestrians
• Do not provide support features of a handrail
• Criteria in guidance document

14
Pedestrian Channelizers

• May or may not be TPAR
• Detectible Edging
• Temporary Traffic Control (TTC) Barricades
• Longitudinal Channelizers
• Handrails
• Guiderails
• Temporary Traffic Barriers
• Pavement Markings

15
Other TPAR Devices

• Curb ramps
• Criteria summarized into document
• Grades, landings, detectable edging, side slopes,
  gutter water flow, detectable warnings, and
  handrails.
• Detectable warnings
• Informational devices
• Audible message devices
• One manufacturer that were aware of
• Encourage development in this area

16
TPAR Walkway, Curb Ramp and Detectible Warning
Example
17
TPAR Clear Area and Intrusion Protection

• Longitudinal barrier may be needed to separate
  pedestrian and vehicular traffic
• TPAR free of intruding objects (as in diagram)

18
TPAR Clear Area and Intrusion Protection
19
Please answer questions in Section B TPAR Design
Guidance Questions???
20
TPAR Curb Ramps

• Should meet standards for TPAR Walkways
• Grades
• 121 to 101 max slope for max 6 rise
• 101 to 81 max slope for max 3 rise
• Landings minimum 48 clear, level area near top
  and bottom of ramp
• Continue detectible edging if on approach to ramp

21
TPAR Curb Ramps

• Side slopes of ramp
• 31 or flatter into existing gutter (except with
  detectable edging or edge protection)
• 101 or flatter cut into upper walkway
• Do not restrict gutter water flow
• Detectable warnings only leading into traffic
  area
• Handrails not required unless
• Part of TPAR Walkway requiring handrails
• Exceeds 6 rise and 72 length standards