Review of Traffic Concurrency/Traffic Study Methodology Powerpoint

Review of Traffic Concurrency/ Traffic Study Methodology August 6, 2019 Concurrency • Concurrency is one of the goals of the Growth Management Act (GMA) • Timely provision of public facilities and services relative to the demand for them • To maintain concurrency means that adequate public facilities are in place to serve new development as it occurs or within a specified time period • GMA gives special attention to concurrency for transportation Concurrency Process • Comprehensive Plan establishes level-of-service standards (LOS) for arterials, transit service, and other facilities • LOS used to determine whether impacts of a proposed development can be met through existing capacity and/or to decide what level of additional facilities will be required • Transportation is only area of concurrency that specifies denial of development if LOS standards cannot be met • A developer may not be required to pay for improvements to correct existing deficiencies. Traffic Impact Analysis Applicable BIMC Sections: 15.32 Concurrency ◦ “Concurrency” means that adequate transportation improvements or strategies needed to maintain the adopted level of service standards are in place at the time of development or that a financial commitment is in place to provide the improvements or strategies within six years. 15.40 Traffic Studies for Development ◦ An individual traffic impact analysis (TIA) shall be required for all proposed developments or improvements for which transportation facility improvements, dedications and/or other mitigation may be made a condition of development permit issuance or approval. Applications Subject to Concurrency Test • Preliminary plat (subdivision of five or more residential lots) • Site plan and design review • Any development that generates 50 or more average trips per day (ADT) or five (5) or more a.m. or p.m. peak hour trips, per the latest edition of the ITE Trip Generation Manual Traffic Impact Analysis Requirement Threshold Comparison Volume Threshold Single Family Agency ADT1 Peak Hour2 Equivalent3 Other COBI 50 54 54 _ Sammamish _ 10 10 _ Burien _ 10 10 _ Gig Harbor _ 15 15 _ Renton _ 20 20 _ University Place _ 20 20 _ Edmonds _ 25 25 _ Auburn _ 30 30 _ Redmond _ 30 30 25 employees Everett _ 50 50 _ Federal Way _ 100 100 _ Kent 750 100 100 _ Bremerton 2% of existing 2% of existing _ _ 1. Average Daily Traffic volume generated by proposed development. 2. Peak hour traffic volume generated by proposed development. 3. Peak hour volume equivalent to volume generated by XX single family homes. 4. Proposed COBI additional "threshold". Transportation Impact Fees • Transportation Impact Fees (TrIF’s) are collected to fund improvements that add capacity to the transportation system, accommodating the travel demand created by new development. TrIF Requirements GMA Compliant Comprehensive Plan – Adopted 2017 ◦ Land Use Element ◦ Transportation Element ◦ LOS Standards – intersections and segments ◦ Travel Forecast based on the Adopted Land Use Element ◦ Capital Facilities Plan ◦ Project Descriptions ◦ Project Costs ◦ Project Schedule TrIF Rate Study – Completed in 2015 TrIF Ordinance – Adopted Ordinance 2015-07 TrIF’s Can be Used to: Reimburse costs for previously constructed projects that serve growth ◦ Projects have remaining capacity based on adopted LOS ◦ Remedies for pre-existing deficiencies are excluded Pay for future projects that serve growth ◦ Projects are based on adopted LOS ◦ TrIF is not 100% of the growth share ◦ Other fees or payments should be credited ◦ Projects may resolve an existing deficiency and add additional capacity ◦ The additional capacity can be charged to growth TrIF’s Cannot be Used to: • Pay for correction of existing deficiencies • Pay for project improvements that provide benefits to a single development only • Pay for projects not reasonably related to growth • Pay for projects not on an Adopted Capital Facilities Plan Design and Construction Standards • RCW Chapter 35.43 charges the City with the authority to prepare standards for construction. • Last Adopted by Ordinance 2015-29 • Provide consistent road and infrastructure design elements and construction requirements for developers, private parties, and utility companies, who construct or modify road or right-of-way facilities, including on-site utilities storm drainage, all requiring city permits or approvals. • Provide consistency, wherever possible, between development-related construction and the Department's program for construction of new city roads, reconstruction of existing roads, and attendant infrastructure facilities. COBI Street Standards are Unique Secondary Arterial - Urban ◦ 10-foot Vehicle Lanes, 5-foot Paved Shoulders, Curbs, and 5-foot Sidewalks Secondary Arterial – Suburban ◦ 10-foot Vehicle Lanes, 5-foot Paved Shoulders, and 3-foot Gravel Shoulder Collector - Urban ◦ 10-foot Vehicle Lanes, 3-foot Paved Shoulders, Curbs, and 5-foot Sidewalks Collector – Suburban ◦ 10-foot Vehicle Lanes, 3-foot Paved Shoulders, and 3-foot Gravel Shoulder Residential Access – Urban • 10-foot Vehicle Lanes, Curbs, and 5-foot Sidewalks Residential Access – Suburban • 9-foot Vehicle Lanes, 3-foot Gravel Shoulders Residential Access – Optional Suburban • 12-foot Shared Vehicle Lane, 3-foot Gravel Shoulders (<20 Lots) Questions?.

Load more