accessible pedestrian signal judy wong senior transportation engineer city of los angeles,...
TRANSCRIPT
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Accessible Pedestrian Signal
Judy WongSenior Transportation Engineer
City of Los Angeles, Department of Transportation (LADOT)
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Background• Conventional
intersections with two signal phases
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Background (continued)• Signalized
intersections with multi-phase
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Background(continued)• Intersections with unusual geometry
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Unusual geometry
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City Council and Public Involvements
•Complaints from public•Requests from Commission on Disability•Feasibility study directed by the City Council’s Transportation Committee•Study presented to City Council
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What is an Accessible Pedestrian Signal (APS) ?
A device that communicates information about pedestrian timing at signalized intersections to the visually impaired.
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Features•Locator tone: provides info regarding existence and location of ped pushbuttons•Push button: places a call for the “WALK” signal and activates the APS •Vibro-tactile arrow: indicates the direction of travel and emits a distinguishable tone as it vibrates during “WALK” phases
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Ped-actuated Pedestrian Crossing
• Pushbutton activates accessible ped signal and the WALK interval
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Pre-timed & Rest-in-Walk Pedestrian Crossing
• Pushbutton activates accessible ped signals only. WALK interval is on recall.
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Figure 2B-26CA MUTCD 2012
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Applications• Intersections adjacent to a major pedestrian traffic
generator such as transit centers, municipal facilities, shopping centers, etc.
• New signalized locations• Intersections with left turn phasing or multiple
phasing• Intersections at light rail crossings• Locations frequently used by individuals with visual
disability
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APS Installation at Los Angeles City Hall
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Los Angeles Metro Gold Line Station
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Los Angeles Metro Expo Line Station
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CA MUTCD 2012
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Cost
• $1,100 per APS unit including labor and material – $650 per regular pushbutton
• A typical four-leg intersection requires 8 APS units, which amounts to $8,800 per intersection.
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Conclusion• Well received by the Commission on Disability• Positive feedback from the public• Developed comprehensive application guidelines• Approached by other agencies to share experience• Explore additional features to provide more benefits