18.185.030 Traffic impact study requirements.
A. The TIS shall be prepared by a certified professional transportation engineer acceptable to the city. The engineer must be currently licensed and otherwise qualified to perform the work under applicable professional and community standards and must have no financial interest in the project whatsoever and no past or current pecuniary association of any kind with the developer other than occasional work as an independent contractor performing traffic impact studies. The TIS shall determine the impact of the proposed development on existing and proposed transportation facilities and assess the applicant’s plans to mitigate such impacts.
B. Contents. The TIS will include the following:
1. Study Area. The study area shall be the area of influence of the proposed action or development and all segments of the surrounding transportation system where users are likely to experience a change in the quality of traffic flow, including:
a. All site access intersections.
b. Nearest intersecting collector or arterial street upstream and downstream of the proposed action or development.
c. Any other collector or arterial street intersection that would experience an increase of 50 additional net peak hour trips.
d. Additional intersections requested by staff.
2. Description of the proposal, phasing, if applicable, time schedule, intended use of the site(s), and intensity of use.
3. Study Time Frames.
a. Existing conditions.
b. Build-out year or completion year of each significant phase of development.
c. Twenty years from existing (for comprehensive plan and zoning amendments).
4. Tables.
a. Trip generation (including phase breakdown if applicable).
b. LOS table (LOS for every analysis scenario at every study area intersection. Report LOS, delay, v/c ratio, 95 percent vehicle queue, and any additional pertinent analysis results).
5. Figures.
a. Vicinity map.
b. Site or tentative plan map.
c. Background traffic volumes (all study intersections, all analysis years).
d. Trip distribution and assignment.
e. Total (background plus site generated) traffic volumes (all study intersections, all analysis years).
6. The stamp and signature of a qualified registered professional engineer with a license valid in the state of Oregon.
C. The community development director or his/her designee may waive or reduce the scope of the TIS if the impacts from the development area are reasonably known and do not provide reasonable justification for the estimated cost of the analysis and report preparation. In waiving or limiting the scope of a transportation impact analysis that would otherwise be required by subsection (B) of this section, the community development director or his/her designee shall make a written determination that potentially affected intersections will not fall below the performance standards in the Talent TSP or the intersections have been adequately analyzed already in research and reports available to the city. The community development director or his/her designee shall coordinate with ODOT and/or Jackson County as appropriate prior to waiving or reducing the scope of a transportation impact analysis for any development impacting a state or county maintained roadway. [Ord. 817 § 8-3L.930, 2006.]