Presentation on theme: "Draft Temporary Pedestrian Access Route (TPAR) Guidance Ken E. Johnson, PE Mn/DOT Office of Traffic, Safety and Technology 651-234-7386."— Presentation transcript:
Draft Temporary Pedestrian Access Route (TPAR) Guidance Ken E. Johnson, PE Mn/DOT Office of Traffic, Safety and Technology
Draft TPAR Guidance Located in your folder Alternatively:
Whats in the TPAR Guidance? Mn/DOT ADA Implementation Plan - PROWAG is primary guidance for accessible facility design on Mn/DOT projects
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
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.
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 – Todays 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 were 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 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
TPAR Curb Ramps Side slopes of ramp – 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