Professional Services Agreement - Abonmarche Consultants - Mayflower and Adams Road Traffic Impact Study

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Traffic Impact Study Proposal Mayflower Road and Adams Road August 2, 2019 Page 2 of 3 generated from this data. Collect existing vehicle speed along Adams Road, Mayflower Road, and Dylan Drive within the study area. 3. Conduct a site visit and obtain existing geometric, lane use, traffic control and sight distance at the study area intersections. 4. Existing Capacity Analysis ACI will calculate existing vehicle delays, Levels of Service, and vehicle queues for the study area intersections based on the methodologies of the Highway Capacity Manual, latest edition using Synchro/SimTraffic analysis software. 5. Horizon Year Capacity Analysis • Based on information received, the project is intended to be phased as follows: • 2020 - Initial development along Chet Waggoner Court • 2023 - Remainder of the development shown on the concept plans • The existing traffic data will be projected for each of these horizon years using an agreed upon growth rate to provide "background" traffic volumes that would be expected with no development of the proposed project. • ACI will then calculate horizon year vehicle delays, Levels of Service, and vehicle queues for the study area intersections based on the methodologies of the Highway Capacity Manual, latest edition using Synchro/SimTraffic analysis software. 6. Trip Generation: • Site generated trip projections will be developed based on the Institute of Transportation Engineers (ITE) Trip Generation Manual (10th Edition). The trip generation values will be calculated for the a.m. and p.m. peak hour traffic generated by the proposed development per phase, based on land use codes agreed upon with the city. 7. Trip Distribution: • ACI will distribute the traffic for the proposed development for the a.m. and p.m. peak hour periods per phase to the adjacent road network and intersections based on existing traffic patterns. • The proposed trips will be combined with horizon year traffic for each phase to establish the a.m. and p.m. peak hour traffic to be used in analysis of the future conditions. 8. Future Capacity Analysis: • ACI will calculate future vehicle delays, Levels of Service, and vehicle queues for the study area intersections for each phase based on the methodologies of the Highway Capacity Manual, latest edition using Synchro/SimTraffic analysis software. 9. Geometric and Traffic Control Devices Review. ACI will: • Identify improvements (if any) for the study area road network and intersections that would be required to accommodate the site -generated traffic volumes. 10. Speed Study: • Our Subconsultant will collect 24-hour traffic counts including vehicle speed data in 5 mile per hour increments along the segments listed above. ACI will use the 85th percentile speed as a basis for the proposed speed limit and evaluate additional factors to determine the optimal speed limit that most effectively balances safety and travel time and land use. ACI will consider short term future M ME Appendix 2