5 2009 Federal MUTCD Published by US DOT, FHWA Contains standards for all traffic control devices on all public roadsAll states must adoptGoes through Federal rule-making therefore has the weight of lawAll 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 GuidanceIdentifies 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 evaluateTPAR Devices possible categoriesTemporary Walkway SurfaceDetectible EdgingHandrailTemporary Ramp PanelsDetectible WarningAudible Message Device
10 Non-TPAR Devices Approved Products List Pedestrian Channelizing Devices Possible CategoriesGuiderailPedestrian SignsLongitudinal Channelizer
11 Approved Products List Feedback on devices in demonstration areaToday’s audienceFocus groupsTrainers and Pedestrians with DisabilitiesHelp Mn/DOT develop criteria to evaluate devices fairly
12 TPAR Walkways and Ramp Sections May consist of a combination of:Existing surfacesImproved surfacesOr portable devices covering existing surfacesRemain free of tripping hazards or other objectsCriteria in guidance documentSurface, 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 walkwaysProvide required supportGuiderails provide visual and tactile guidance to all pedestriansDo not provide support features of a handrailCriteria in guidance document
14 Pedestrian Channelizers May or may not be TPARDetectible EdgingTemporary Traffic Control (TTC) BarricadesLongitudinal ChannelizersHandrailsGuiderailsTemporary Traffic BarriersPavement Markings
15 Other TPAR Devices Curb ramps Detectable warnings Criteria summarized into documentGrades, landings, detectable edging, side slopes, gutter water flow, detectable warnings, and handrails.Detectable warningsInformational devicesAudible message devicesOne manufacturer that we’re aware ofEncourage 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 trafficTPAR free of intruding objects (as in diagram)
19 Please answer questions in Section B: TPAR Design GuidanceQuestions???
20 TPAR Curb Ramps Should meet standards for TPAR Walkways Grades: 12:1 to 10:1 max slope for max 6” rise10:1 to 8:1 max slope for max 3” riseLandings – minimum 48” clear, level area near top and bottom of rampContinue 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 walkwayDo not restrict gutter water flowDetectable warnings: only leading into traffic areaHandrails not required unless:Part of TPAR Walkway requiring handrailsExceeds 6” rise and 72” length standards