2024-05-07 P & Z Packet - Laserfiche WebLink

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LaLonde Development Traffic Study May 1, 2024 Page 9 YEAR 2027 CONDITIONS To understand impacts associated with the proposed development, an intersection capacity analysis was completed for year 2027 build conditions under each phase of development. Table 3 provides a summary of the year 2027 build condition capacity analysis. Table 3 Year 2027 Build Condition Intersection Capacity Analysis Summary Level of Service (Delay) Traffic Main Street (CR 14) Intersection AM Peak Hour PM Peak Hour Control Peak 15-min Overall Hour Peak 15-min Overall Hour Phase 1 Development Centerville Road (CR 21) AWSC B (13) B (10) C (24) C (17) Progress Road / East School Access SSS A / C (23) A / C (18) B / C (24) A / C (19) Phase 2 Development Centerville Road (CR 21) AWSC C (15) B (11) D (32) C (23) Progress Road / East School Access SSS A / D (29) A / D (26) C / C (20) A / C (20) AWSC All-Way Stop Control SSS Side-Street-Stop Results of the year 2027 Phase 1 Build intersection capacity analysis indicate that all intersections and approaches are expected to continue to operate at an acceptable LOS C or better during the typical weekday a.m. and p.m. peak hours. In addition, the intersections during peak 15-minute pick-up / drop- off periods associated with the adjacent Centerville Elementary School will also operate at LOS C or better on average over the entire peak hours; the westbound movement along Main Street (CR 14) at Centerville Road (CR 21) is expected to operate at LOS E during the p.m. peak 15-minute period. The corresponding westbound queues under this condition are expected to regularly extend beyond Progress Road, limiting access for motorists trying to access Main Street (CR 14). Note that these queuing are primarily related to the increase in general background growth, as opposed to the proposed development, as other movements are minimally impacted by the proposed development. Further discussion regarding potential mitigation to address these queues is noted later in this report. Under year 2027 Phase 2 Build conditions, delays and queues are expected to increase as compared to the year 2027 Phase 1 Build conditions. Most intersections and approaches will continue to operate at an acceptable LOS D or better throughout the a.m. and p.m. peak hours, as well as the peak 15- minute periods. However, during the p.m. peak 15-minute period, the eastbound and westbound approaches of Main Street (CR 14) will operate at LOS E. In addition, westbound queues along Main Street (CR 14) from Centerville Road (CR 21) will regularly extend beyond Progress Road. Southbound queues do significantly change under the future build conditions as the development adds on average one or two southbound vehicles per minute during the peak periods. Although the future capacity analysis indicates that the intersections will operate within acceptable industry standards from an overall level of service perspective, westbound queuing continues to be a potential issue. Therefore, discussion with agencies should occur regarding the willingness to accept the delays and queues for the relatively short time period or consider implementing mitigation to improve operations. The following section provides potential mitigation alternatives for consideration.