Report Letter
Proposed Development and Study Area
Existing Traffic Conditions
Future Projected Traffic Conditions without Development
Proposed Site Traffic
Traffic Impact of Proposed Development
Problem Areas
Recommended Improvements and Solutions
Appendices
Recommended Contents of
Traffic Impact Studies
The purpose of this document is to provide guidance to developers and transportation consultants regarding the contents of traffic impact studies submitted in conjunction with development applications in Brooklyn Park.
In general, a traffic impact study is required for any development generating approximately 1,000 or more vehicle trips per day, or 100 or more vehicle trips in any one hour period. The trip rates in the most current edition of the Institute of Transportation Engineers (ITE) Trip Generation should be used in determining the amount of traffic a particular development will generate. If no ITE rates exist for a particular type of development or there is some uncertainty regarding the need to conduct a study, the city traffic engineer will determine if a traffic impact study is required.
The transportation consultant or project manager shall meet with the city traffic engineer to establish the study area, to discuss critical issues, and to determine the complexity of the report to be submitted. The traffic impact study report will usually include the following:
- Proposed Development and Study Area
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Describe proposed development
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Map of site and street network
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Identify intersections/highway links to be analyzed
- Existing Traffic Conditions
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Figures showing ADTs, peak hour turning movements and levels of service (for PM peak hour and peak hour of development unless otherwise directed by the city traffic engineer)
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Indicate roadway/intersection geometrics, street right-of-way, type of traffic control at intersections, traffic regulations (i.e. no parking zones posted speed limit), and bus stops
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Determine queue lengths at controlled intersections that may affect project
- Future Projected Traffic Conditions Without Development (city staff may provide base data)
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Figures showing future projected ADTs, peak hour turning movements and level of service
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Identify changes in road network and land use expected under full development conditions
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Determine queue lengths at controlled intersections that may affect project
- Proposed Site Traffic
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Site-generated traffic – ADT and peak hours (If development is to be completed in phases, show cumulative traffic for each phase added.)
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Figure showing distribution by direction of approach
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Figure showing assignment (volumes and turning movements) to each link in the network analyzed
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"Pass-by" trip assumptions, distribution and assignment
- Traffic Impact of Proposed Development
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Figures showing ADTs, peak hour turning movements and level of service for present conditions with proposed development
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Figures showing ADTs, peak hour turning movements and level of service for future projected conditions with proposed development
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Determine queue lengths at controlled intersections that may affect the project
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Review ingress/egress sight distance, capacity and safety
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Review on-site circulation for vehicles and pedestrians
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Review driveway and parking lot design for compliance with city standards and codes
- Recommended Improvements and Solutions
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Identify possible short-term improvements and solutions
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Identify possible long-term improvements and solutions
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Recommended improvements and solutions
- Appendices
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Capacity analysis calculations, data and assumptions (Provide sufficient information for reviewer to follow analysis and to be able to spot check results.)
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Queue length analysis calculations, data and assumptions
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Provide other pertinent information that may be needed to explain or justify data used in the report (i.e., if data from an actual field study of sites in the metro area is used in place of ITE trip generation rates, then a report of the field study results should be included in the appendix.)
The traffic impact study should be submitted with the development application. However, the developer may find it advantageous to have the traffic impact study completed several weeks prior to the submittal of the development application in order to incorporate recommendations from the traffic report on the development plan.
Fifteen copies of the traffic impact study should be submitted with the development application. The report should be produced on standard 8 ½ inch x 11 inch letter size paper.
Contact Engineering:
Mailing Address:
5200 85th Ave N
Brooklyn Park, MN 55443
Phone: 763-493-8100
Email Engineering
