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RAISED
INTERSECTIONS
(See also Raised
Crosswalks)
These are
raised areas, which cover the entire intersection. They have ramped
edges on all approaches and exits and can incorporate textured
paving materials on the flat section.
The raised section is usually at sidewalk height or may be slightly
below to provide a ridge for the visually disabled pedestrian.
They make the entire intersection area a pedestrian oriented zone
and are benefit from not impacting parking. They are a moderately
expensive measure.
Raised intersections, sometimes called raised junctions, intersection
bumps or plateaus.
Temporary
Installation
No
Temporary Versions Found
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Permanent
Installation
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PROS
1.
Creates more pedestrian friendly intersection.
2. Often used as part of area-wide plan.
3. Reduces speeds at location.
4. Do not reduce on-street parking demand.
5. Can enhance aesthetics.
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CONS
1.
Moderately high priced.
2. May be issues with emergency response agencies.
3. May increase noise.
4. Drainage issues problematic.
5. Need detectable ADA warnings
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Summary
of Effectiveness
|
Volume
Reduction
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Unknown
|
|
Speed
Reduction
|
Yes
|
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Safety
Improvement
|
Unknown
|
|
-
|
-
|
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Streets
to Use On – Collector, Local
|
Local/Collector
|
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Use
on Bus Route
|
Yes
|
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Use
with Curbs and Gutters
|
Yes
|
|
Spot
or Area-wide Use
|
Spot
or Area
|
|
-
|
-
|
|
Emergency
Service Access Issues
|
Less
than Humps
|
|
Impacts
on Arterials
|
Unknown
|
|
Change
in % Trucks
|
Unknown
|
|
Environmental
Changes
|
Unknown
|
|
-
|
-
|
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Dependence
on Enforcement
|
None
|
|
Level
of Violation
|
Self-Enforcing
|
|
-
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-
|
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Aesthetics
and Landscaping
|
Can
be Paved
|
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