Transcript Standard Site Impact Process

Analysis
Process
Florida Department of Transportation
District Coordinators
Systems Planning Office
Standard Site Impact Process
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Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Methodology Development
Existing Conditions Analysis
Background Traffic
Trip Generation
Trip Distribution
Mode Split
Assignment
Future Conditions Analysis
Mitigation Analysis
Site Access, Circulation & Parking
Review and Permitting
Methodology Development
Step 1
How can we study the impacts of development
to assure the community get the best
transportation possible?
– Avoid wasted time and effort
– Agree on critical features
of the study
Existing Conditions Analysis
Step 2
What are the physical and operational
conditions of roadways and intersections?
– Get traffic counts
– Determine roads, lanes, and other service
– FDOT Level of Service (LOS) Handbook
generally used
Background Traffic
Step 3
How much will traffic grow without the
development?
– Manually projects volumes from
historic data
– Computer can also model growth
Trip Generation
Step 4
How many trips are expected from the
development?
– Use known relationships found in the
Institute of Transportation Engineers (ITE)
Trip Generation Report, Seventh Edition
Trip Distribution
Step 5
Where do trips come from and go to?
– Determine origin and destination of trips
– Can use FSUTMS
(Florida Standard Urban Transportation Model Structure)
TAZ 2
TAZ 3
TAZ 1
TAZ 4
Mode Split
Step 6
• How many people get there in each vehicle?
– Estimate the percentage of person trips using
each mode of travel
– Most MPO models contain transit component
Bicycle
Pedestrian
Assignment
Step 7
• What route do vehicles take?
– Can be done manually (tedious)
– FSUTMS model provides a districtapproved tool for all Florida MPOs
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900
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Future Conditions Analysis
Step 8
• What will the traffic conditions be after
the development is built?
– Assess the impacts of the developmentgenerated traffic using the department’s
LOS guidelines and standards
Mitigation Analysis
Step 9
How can LOS be made acceptable?
• Determine where and how roadway
deficiencies must be addressed
– Create cost estimates
– Determine the appropriate
share of responsibility
Site Planning
Step 10
How can the site design enhance
circulation and minimize traffic conflict?
• Access Management principles
where can the
access be put to
minimize
impacts?
Review and Permitting
Step 11
Developer still has to get permits!
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Driveway permits
Signal warrant studies
New or modified interchange approvals
Drainage