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Peak hour factors (PHF) shall be calculated based on existing count data for signalized and non-signalized intersections and roadways. For analyzing future conditions, a peak hour factor of .90 shall be used unless agreed upon by the City Engineer. For existing signals that will be analyzed, it is the responsibility of the developer to obtain and use the existing cycle lengths and signal phasing from the city, unless otherwise agreed to by the City Engineer.
(Ord. 99-207, passed 1-10-2000)
The developer shall meet with the City Engineer, or his or her designated representatives, to discuss the following variables:
(a) Right turn on red assignments;
(b) Grades;
(c) Lane widths;
(d) Percent of trucks;
(e) Pedestrian movements; and
(f) Any deviations from the proscribed procedures described herein, and agreed to by the City Engineer and the developer. The deviations shall be noted in a memo of understanding from the City Engineer to the developer. Unless so noted in the letter, the standard practices described herein shall be used.
(Ord. 99-207, passed 1-10-2000)
The traffic impact study shall include recommendations for improvements to maintain capacity, provide signal capacity, and improve safety to, from and within the development. These may include, but are not limited to:
(a) Intersection recommendations. Modifications to reduce delay and increase capacity on the critical movements, while not negatively impacting non-site traffic. The modifications may include, but are not limited to, adding lanes, removing curb parking, changing signal phasing or timing, and lane use modifications. A level of service of “D” or better is required;
(b) Site driveway recommendations. If site driveways are proposed to be signalized, they shall be warranted and located for good traffic progression past the site. Adequate ingress and egress capacity shall be provided. Capacity of on-site intersections shall be sufficient to prevent traffic that is entering the site from backing up on the adjacent street; and
(c) Acceleration and deceleration lanes. May be required to minimize potential for accidents due to speed reduction at driveways, even if turn volume requirements do not require the lanes.
(Ord. 99-207, passed 1-10-2000)
The cost for infrastructure improvements, new traffic signals, modification of existing traffic signals, traffic signs and pavement markings which are necessitated by the new development shall by borne by the developer. The city may participate in the costs if the City Engineer determines the changes will provide benefits to vehicle or pedestrian traffic not associated with the proposed development.
(Ord. 99-207, passed 1-10-2000)
The following report outline provides a framework for traffic impact study reports to the extent they are relevant to the study issues and needs. Topics not relevant may be omitted; however, additional sections may be warranted because of specific issues to be addressed, local study requirements and results of the study.
Traffic Impact Study Report Outline
I. Title Page
A. Development’s name
B. Development’s location
C. Applicant’s name, address, telephone and fax numbers
D. Preparer’s name, address, telephone and fax numbers
E. Report date
II. Table of Contents
III. List of Figures, Tables and Appendices
IV. Executive Summary
One to two page maximum summary including the following:
A. Site location and study area
B. Development description
C. Main findings
D. Conclusions
E. Recommendations
F. Memo of understanding to City Engineer
V. Proposed Site Development
A. Information sources
B. Existing zoning
C. Land use and anticipated quantity
D. Location
E. Site plan
F. Phasing and timing
VI. Area Conditions
A. Study area
1. Area of influence
2. Area of significant impact
B. Study area land use
1. Existing land use
2. Existing zoning
3. Anticipated future development
C. Site accessibility
1. Area roadway system
a. Existing
b. Future
2. Traffic volumes and conditions
3. Transit service
4. Existing relevant transportation management programs
VII. Projected Traffic
A. Horizon years
B. Peak hours
C. Site traffic
1. Trip generation
2. Trip distribution
3. Modal split
4. Trip assignment
D. Through traffic
1. Method of projection
2. Non-site traffic for anticipated development in study area
a. Method of projection
b. Trip generation
c. Modal split
d. Trip assignment
3. Through traffic
4. Estimated volumes
E. Total traffic
VIII. Traffic Analysis
A. Site access
1. Vehicular
2. Service and emergency (check with emergency personnel for requirements)
3. Pedestrian
4. Transit
B. Capacity and level of service
1. Intersections
2. Ramps
3. Weaving sections
C. Traffic safety
1. Sight distances
2. Impact on current high accident locations
3. School zones within study area
4. Special circumstances
D. Traffic control
1. Traffic signals
a. Signal warrants
b. Signal coordination
2. Speed limits
3. Other
E. Site circulation and parking needs
1. On-site parking needs
2. Ease of internal circulation
3. On-site queuing provisions
4. Joint access
IX. Improvement Analysis
A. Improvement to accommodate base traffic
B. Additional improvements to accommodate site traffic
C. Alternative improvements
D. Status of improvements already funded, programmed or planned
E. Evaluation
X. Findings
A. Site accessibility
B. Traffic impacts
C. Need for improvements
D. Compliance with applicable codes
XI. Recommendations
A. Site access/circulation plan
B. Site access
1. On-site circulation and parking
2. Off-site circulation
C. Roadway improvements (preliminary drawings showing improvements)
1. On-site
2. Off-site
3. Phasing
XII. Site Plan
(Ord. 99-207, passed 1-10-2000)