Detectable Warnings

X

Correct Placement if X < 5 feetCorrect Placement if X > 5 feet

GRADE BREAK

PROWAG(R304.2.1)

PROWAG(Advisory R304.2.3)

“… the vertical rows of truncated domes in a detectable warning surface should be aligned to perpendicular or radial to the grade break…”

Detectable Warnings

PROWAG (R304)

ADAAG(4.29)Detectable Warnings

Avoid gaps in detectable warnings

PROWAG (R304)

ADAAG(4.29)Detectable Warnings

“Detectable warning surfaces shall contrast visually with adjacent… walkway surfaces, either light-on-dark or dark-on-light.”

Detectable Warnings PROWAG (R304)

ADAAG(4.29)

Detectable warnings are not wayfinding devices. This application has a gap.

Detectable Warnings PROWAG (R304)

ADAAG(4.29)

Does this meet ADA?

Detectable Warnings PROWAG (R221)

ADAAG(4.29)

“The overuse of detectable warning surfaces should be avoided in the interests of message clarity. However, where commercial driveways are provided with

traffic control devices or otherwise are permitted to operate like public streets, detectable warnings should be provided at the junction between the pedestrian

route and the street.”

MDOT Special Provision 03SP803(A)“Do not construct detectable warnings by forming or stamping in newly cast concrete.”

Detectable Warnings

PROWAG(R301.5.2)

ADAAG(4.5.2)Changes in Level

PROWAG(R301.5.2)

ADAAG(4.5.2)Changes in Level

Gaps and Grates PROWAG(R301.7)

ADAAG(4.5.4)

“Gratings… shall have spaces no greater than ½”

wide in one direction.”

“Gratings… shall be placed so that the long dimension is

perpendicular to the dominant direction of travel .”

PROWAG(R301.7.1)

“Openings shall not permit passage of a sphere more than ½” in diameter.”

ADAAG(4.5.4)Bridge Joints

PROWAG(R301.7.1)

ADAAG(4.5.4)Bridge Joints

A properly installed bridge expansion device covers the gap

Protruding Objects PROWAG(R401)

ADAAG(4.4.1)

PROWAG(R410)

ADAAG(10.2.1)Bus Pads

Buses often need additional room for loadingBuses often need additional room for loading

Bus Pads PROWAG(R410)

ADAAG(10.2.1)

Parking

ADAAG does not specifically address on-street parking. Local jurisdictions should look to the PROWAG to provide accessible on-street parking.

PROWAG(R216, R308)

PROWAG: Where on-street parking is marked or metered, accessible parking spaces complying with R308 shall be provided on the block perimeter…

On-Street Parking

PROWAG(R306.2)

“Each crosswalk with pedestrian signal indication shall have an accessible pedestrian signal which includes audible and vibrotactile indications of the WALK interval.”

“A device that communicates information about pedestrian timing in non-visual format such as audible tones, verbal messages, and/or vibrating surfaces.”

WHAT ARE ACCESSIBLE PEDESTRIAN SIGNALS?

Section 4E.06 of the MUTCD:

PROWAC R306.2:

Accessible Ped Signals (APS)

PROWAG(R306.2)

Also found in MUTCD 4E.09

Accessible Ped Signals (APS)

PROWAG(R306.2)Pushbutton Placement

This is not accessible!This is not accessible!

PROWAG(R404)Pushbutton Placement

Pushbuttons must have a level landingPushbuttons must have a level landing

Not behind clutter!Not behind clutter!

Pushbutton Placement PROWAG(R404)

Pushbutton placement: not behind grassPushbutton placement: not behind grass

Pushbutton Placement PROWAG(R404)

PROWAG(R306.2)Pushbutton Placement

Where are we sending pedestrians?Where are we sending pedestrians?

40 feet

PROWAG(R404)Pushbutton Placement

Pedestrian count-down signal tells pedestrians how much Pedestrian count-down signal tells pedestrians how much crossing time is left …crossing time is left …

Countdown Ped Signals PROWAGR306

PROWAC R205“When an existing pedestrian access route is blocked by construction, alteration, maintenance, or other temporary conditions, an alternate pedestrian access route complying to the maximum extent feasible shall be provided.”

FHWA ADA Toolkit Desk Reference:“A smooth, continuous, hard surface should be provided throughout the entire length of the temporary pedestrian facility. There should be no curbs or abrupt changes in grade or terrain that could cause tripping or be a barrier to wheelchair use. The geometry and alignment of the facility should meet the applicable requirements of the "Americans with Disabilities Act Accessibly Guidelines for Buildings and Facilities (ADAAG)" (see Section 1A.11).”

PROWAG(R205)Pedestrian Detour Route

PROWAG(R302)

“Where the alternate circulation path is exposed to adjacent construction, excavation drop-offs, traffic, or other hazards, it shall be protected with a pedestrian barricade or

channelizing device…”

A continuous bottom edge 6” max above the groundupper rail 36” minimum above ground

Pedestrian Detour Route

Pedestrian Detour Route

Pedestrian route should be easy to travelPedestrian route should be easy to travel

Safe and Accessible

It is possible to meet ADA and still have an unsafe condition.It is possible to meet ADA and still have an unsafe condition.