Res 2015-160/approving a professional engineering services agreement between the City and Unintech Consulting Engineers, inc. for the provision of professional services in connection with the Mill Street Improvements project in the not-to-exceed amount o

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of the intersection. 3. Analysis • Prepare existing condition diagram showing details from site inspection and field work mentioned above. • Analyze crash records and prepare collision diagram from crash reports showing crash experience by type, location, direction of movement, severity, weather, time of day and date. • Prepare a site map of the subject intersection to document existing traffic and geometric conditions. • Analyze all collected traffic count data and geometric data • Estimate new trips generated by the proposed development using the Institute of Transportation Engineers (/TE) Trip Generation Handbook (9' Edition). • Assign site generated trips on to the subject intersection (trip distribution). • Conduct TSWA for the subject intersection under existing roadway geometry and traffic volumes conditions. • Conduct TS WA for the subject intersection under future build conditions of the proposed development. B. Task 2: Intersection LOS Analysis A traffic operational analysis will be conducted for Mill Street at Uhland Road intersection under existing and future build conditions. The latest version of Synchro software and /or Highway Capacity Software will be utilized for the analysis. Measures of Effectiveness (MOEs) such as LOS and delay will be evaluated as part of the analysis. A comparison of these MOEs for different conditions will be conducted. Recommendations to improve intersection capacity and LOS will be provided if needed. C. Task 3: Evaluation of existing bus stop location The existing and most current bus route map for the Mill Street area will be reviewed. Different options on relocating existing bus stop (if needed) will be evaluated based on traffic impacts to the surrounding area and recommendations will be provided accordingly. Deliverables: The consultant shall prepare and submit two (2) reports summarizing the traffic signal warrant and LOS analysis at the subject intersection as well as recommended location of existing bus stop. The report will be submitted at the 30% design phase. The report shall include existing condition diagrams, photographs, traffic counts, collision diagram, completed traffic survey count analysis forms, signal warrant and intersection LOS analysis and results. Revisions to the report shall be made after receiving comments from City of San Marcos. D. Task 2: Traffic Signal Layout Design Assuming the TSWA justifies / warrants a traffic signal at the subject location, we will proceed with the design of a proposed traffic signal at this location. I . The traffic signal layout for the subject intersection will be designed based on the topographic survey of Mill Street and Uhland Road intersection. For major street ( Uhland Road), the survey should extend at least 400', in each direction from the intersection and for minor street (Mill Street), the survey should extend at least 150', in each direction from the intersection. The traffic signal layout will show the location of the traffic signal poles and other relevant signal features at 1 ":40' Scale. The overall signal system will be designed for a mast arm configurations with V IVDS detection or other technology as determined by the City of San Marcos. The traffic signal layout will show signal elevation, any pavement marking revisions, pedestrian element, Americans with Disabilities Act (ADA) element design according to current City of Austin and City of San Marcos criteria, guidelines and specifications. Quantities for the proposed signal will be included as part of the final submittal. Development of traffic signal timing for the proposed traffic signal at the subject intersection is not part of a basic scope of services. Ring and barrier details are included. 2. Prepare Signal notes/details. 3. Prepare electrical schedule /details. 4. Calculate quantities /estimate. IX. MISCELLANEOUS (ROADWAY) A. TRAFFIC CONTROL 6of8 Unintech Consulting Engineers, Inc. 11/4/2015