Module 5 PROWAG: R305 Pedestrian CrossingsModule 5: Pedestrian Crossings. Crosswalk Markings •...
Transcript of Module 5 PROWAG: R305 Pedestrian CrossingsModule 5: Pedestrian Crossings. Crosswalk Markings •...
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Designing Pedestrian Facilities for Accessibility
Module 5 PROWAG: R305 Pedestrian Crossings
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Module 5: Pedestrian Crossings
R305.2 Crosswalks
• R305.2.1 Width. Marked crosswalks shall be 6 ft wide minimum. Crosswalks shall comply with R305.2 and shall contain a pedestrian access route that connects to departure and arrival walkways through any median or pedestrian refuge island.
Safety Effects for Marked vs. Unmarked Crosswalks at Uncontrolled Locations: Executive Summary and
Recommended Guidelines http://www.tfhrc.gov/safety/pubs/ 04100/04100.pdf
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Module 5: Pedestrian Crossings
Crosswalk Markings
• Although the MUTCD provides for design options, research and observation indicate that the continental and ladder designs are the most visible to drivers
• These “longitudinal” markings also improve guidance for pedestrians with low vision and cognitive impairments
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Module 5: Pedestrian Crossings
Crosswalk Markings
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Module 5: Pedestrian Crossings
Crosswalk Markings
• What the pedestrian sees
• What the driver sees
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Module 5: Pedestrian Crossings
Midblock Crossings
• Provide mid-block crossings where blocks are long or where there is pedestrian demand
• Use Accessible Pedestrian Signals (APS) for universal access [more detail in Module 6]
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Module 5: Pedestrian Crossings
Textured crosswalks
• Textured crosswalks are not recommended
• Textures are aesthetically pleasing and are used to:
– Distinguish pedestrian and vehicle space
– Make crossings more visible in theory, but…
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Module 5: Pedestrian Crossings
What the pedestrian sees – good visibility for most; not much help to those with low vision
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Module 5: Pedestrian Crossings
Textured Crosswalks
• If textured crosswalks are used, outline with white
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Module 5: Pedestrian Crossings
Potential Solution: Smooth Crosswalks, Textured Street
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Module 5: Pedestrian Crossings
Crosswalk Design Details
• Crosswalks are part of the pedestrian access route. • Cross-slope:
– At approaches with yield/stop sign or signal: 2% max
– At approaches without control: 5% max– Mid-block crossings: may equal street grade
• Smooth slip resistant surface with running grade of 5% maximum
• Width: 10’ recommended to ensure ramps are in crosswalk; 6 ft min per MUTCD
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Module 5: Pedestrian Crossings
Inaccessible Crosswalk: Crosswalk exceeds 2% cross-slope
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Module 5: Pedestrian Crossings
Inaccessible Crosswalk: Crosswalk is rough and probably exceeds 2% cross-slope
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Module 5: Pedestrian Crossings
Inaccessible Crosswalk: Exaggerated crown exceeds 5% and even 8.3% slope
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Module 5: Pedestrian Crossings
R305.4 Medians and Pedestrian Refuge Islands
• Medians & Refuge Islands shall:– contain a pedestrian access route– be 6-feet minimum in length in the direction of
pedestrian travel
6 ft min
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Module 5: Pedestrian Crossings
Crossing Island & Median Design
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Module 5: Pedestrian Crossings
Crossing Island & Median Design
• 24” DW required at both openings
– Provide 24” smooth pavement in center (if possible)
• If ramped, use landing (5’ x 5’ min) between ramps
– Landing need not be full median height; 3” is enough
24”
5’x5’
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Module 5: Pedestrian Crossings
Overpasses & Underpasses
• ADAAG: pedestrian access route shall meet same requirements as other pedestrian routes, with regards to widths, slopes, etc.
• Elevator or platform lift required if approach slope >5%
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Module 5: Pedestrian Crossings
Overpasses
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Module 5: Pedestrian Crossings
Underpasses
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Module 5: Pedestrian Crossings
Roundabouts
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Module 5: Pedestrian Crossings
Roundabouts
PROWAG to require some form of signalization at new multi-lane roundabout pedestrian crossings.
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Module 5: Pedestrian Crossings
Requirements at Roundabouts
• PROWAG – R305.6.2– At roundabouts with multilane crossings a
pedestrian activated signal shall be provided for each segment of each crosswalk including the signal island
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Module 5: Pedestrian Crossings
Possible Solutions for Roundabout Accessibility
• Audible/tactile cues at crossing locations• Good sight distance• Setback sidewalks• Rumble strips at vehicle exits• In Pavement lighting• Pedestrian signals/beacons
http://www.youtube. com/watch?v=ReNk 2T5ay1c
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Module 5: Pedestrian Crossings
Crosswalk & Ramp Placement
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Module 5: Pedestrian Crossings
Crosswalk & Ramp Placement
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Module 5: Pedestrian Crossings
Possible Solution Crosswalk & Ramp Placement
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Module 5: Pedestrian Crossings
Channelized slip lanes
Islands reduce crossing distance & separate conflicts but increase need for cues for non-visual travel
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Module 5: Pedestrian Crossings
Right-Turn Slip Lane - Details
Cut-through median & island for peds
50 to 60 degree angle between vehicle flows.
Bicycle lane
25’ to 40’ radius depending on design vehicle
150’ to 275’ radius
One car length back Long radius
followed by short
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Module 5: Pedestrian Crossings
Cut-Through or Raised Corner Islands
• With slip lanes, always use raised islands (not painted)
• Ramps must be at least 4 ft. wide
• For cut-through: must be 5 ft. wide
• Provide at least 5 feet of clear (turning) space or level landing
• Provide a 2 foot strip of detectable warnings at end of cut-through or at bottom of ramp
• Align cut-through or ramps with crosswalks
5 ft clear space
Min 4 ftRaised Island
Min 5 ftCut ThroughIsland
5 ft clear space
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Module 5: Pedestrian Crossings
End of Module 5
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