1. Draft Temporary Pedestrian Access Route (TPAR) Guidance
Ken E. Johnson, PE
Mn/DOT Office of Traffic, Safety and Technology

2. Draft TPAR Guidance Located in your folder Alternatively:

3. What’s 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
Today’s 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 Detectable warnings
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 we’re 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:
12:1 to 10:1 max slope for max 6” rise
10:1 to 8:1 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 Do not restrict gutter water flow
3:1 or flatter into existing gutter (except with detectable edging or edge protection)
10:1 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