|
FULL
/DIAGONAL DIVERTER
These
might adversely affect residents' access to their properties.
Gaps can be left for pedestrians and bikes.
Click
here to view detailed plan layout
Full or Diagonal
diverters create a blockage from one corner to the diagonal corner
of an intersection and effectively prohibit some turns and all
through movements at an intersection. They are used to force traffic
movements into a particular pattern to reduce volumes on selected
streets.
Care should
be taken to involve residents in the decision making process because
full or diagonal-diverters can affect access patterns to residences.
Effectively
reduces traffic volumes and speeds on certain streets. Gaps for
pedestrians and bikes can be left.
|
Temporary
Installation
Temporary Diverter Installation
|
Permanent
Installation
Portland, OR
Source: http://www.trans.ci.portland.or.us/ |
PROS
1.
Reduces traffic speed.
2. Reduces traffic volumes.
3. Reduces cut-through traffic.
4. Self-enforcing.
5. Enhanced landscaping opportunities possible.
|
CONS
1.
May reduce access for emergency vehicles.
2. Diversion to longer routes may cause inconvenience
to and be opposed by affected residents.
3. Not suitable on transit routes.
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Summary
of Effectiveness
|
Volume
Reduction
|
Yes
|
|
Speed
Reduction
|
Yes
|
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Safety
Improvement
|
Possible
|
|
-
|
-
|
|
Streets
to Use On – Collector, Local
|
Local
|
|
Use
on Bus Route
|
No
|
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Use
with Curbs and Gutters
|
Yes
|
|
Spot
or Area-wide Use
|
Spot
|
|
-
|
-
|
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Emergency
Service Access Issues
|
Yes
|
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Impacts
on Arterials
|
Possible
|
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Change
in % Trucks
|
Possible
|
|
Environmental
Changes
|
Unknown
|
|
-
|
-
|
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Dependence
on Enforcement
|
Self-Enforced
|
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Level
of Violation
|
None
|
|
-
|
-
|
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Aesthetics
and Landscaping
|
Possible
|
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