Draft Temporary Pedestrian Access Route (TPAR) Guidance
Ken E. Johnson, PE
Mn/DOT Office of Traffic, Safety and Technology
ken.johnson@state.mn.us
651-234-7386

Draft TPAR Guidance
Located in your folder

What’s in the TPAR Guidance?
Mn/DOT ADA Implementation Plan  - PROWAG is primary guidance for accessible facility design on Mn/DOT projects

PROWAG/ADAAG Standards

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

Draft TPAR Guidance
Identifies and compiles various standards for components within an “ADA compliant” facility.

When should the TPAR Guidance be used?
Length of impact?
Size of impact?

Unattended
Vs.
Attended

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

Non-TPAR Devices
•	Approved Products List
–	Pedestrian Channelizing Devices Possible Categories
•	Guiderail
•	Pedestrian Signs
•	Longitudinal Channelizer

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

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.

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

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

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 we’re aware of
•	Encourage development in this area

TPAR Walkway, Curb Ramp and Detectible Warning Example

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)

TPAR Clear Area and Intrusion Protection

TPAR Feedback Form
Please answer questions in Section B:
TPAR Design Guidance
Questions???