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2-2-23 PowerPointRegular Meeting February 2, 2023 Transportation Safety Advisory Commission Residents/Visitors Please sign in. The Hearing of Residents is a time set-aside for any person who wishes to address the Commission.Presentations should be limited to no more than 5 minutes.Each person should fill out the Speaker’s register prior to the meeting located in the lobby.The Commission can only discuss items that are on the agenda.Discussion by the Commission of any item not on the agenda shall be limited to statements of specific information given in response to any inquiry,a recitation of existing policy in response to an inquiry,and/or a proposal to place the item on a future agenda.The presiding officer,during the Hearing of Residents portion of the agenda,will call on those persons who have signed up to speak in the order they have registered.If you have any handouts to provide for the Commission,please visit a City Staff member prior to the meeting. Regular Meeting February 2, 2023 5:30 pm Bob Andrews Conference Room Transportation Safety Advisory Commission 2 Item 1 –Minutes Consideration and/or action regarding the approval of the minutes of the November 3, 2022, TSAC Meeting 3 4 Item 2.1a –Pedestrian Crossings •Savannah Drive near Dietz Creek •Homestead Parkway in vicinity of Amenity Center Pedestrian Crossing Evaluation Summary City of Schertz –September 2022 Location 1 –Savannah Drive Near Dietz Creek •Goals •Support access to Paschal Elementary School •Support access to Pocket Park and Shared Use Path for Willows Ridge / Sunset Ridge •Considerations •Lack of sidewalk on south side of Dietz Creek bridge •No connection from Willows Ranch or Sunset Ridge to Savannah Drive Savannah Drive Traffic Data •Speed Data •ADT –2,700 vehicles per day Direction Average Speed 85th Percentile Speed Number of Vehicles > 40 mph Eastbound 31.4 35.9 37 (3%) Westbound 33.1 37.8 119 (9%) Recommended Treatment •Pedestrian Refuge Island •Elements •Raised Median •ADA Ramps and Detectable Warnings •Sidewalk Connection along Savanah Drive back to Willows Ranch Preliminary Layout Estimated Cost -$35k Benefits •Traffic Calming •Squeeze for both directions •Horizontal deflection for westbound direction (fastest speeds) •Two Stage Crossing •Positioned to maximize sight distance Preliminary Layout Similar Location Foster Meadows South of Still Meadow, San Antonio Location 2 –Homestead Parkway Near Community Center •Goals •Support access to Community Center •Support access to trail •Considerations •Trail access point closest to Hockley Hill •Community Center access 400 feet away, closer to Somervell •Homestead Parkway 40’wide Homestead Parkway Traffic Data •Speed Data •ADT –1,200 vehicles per day (note that neighborhood is still building out) Direction Average Speed 85th Percentile Speed Number of Vehicles > 40 mph Northbound 31.3 36.6 42 (7%) Southbound 33.0 37.8 53 (9%) Recommended Treatment •Combination of two crossings •One aligned with trail •One aligned with community center entrance •Elements •ADA Ramps and Detectable Warnings •Potential Enhancement •Construct median refuge at northern crossing for added traffic calming benefit •85th percentile speed indicates consideration for active/enhanced crossing Preliminary Layout Estimated Cost -$29k Preliminary Layouts Community Center Crossing Trail Crossing Recommended Enhancement: Add Refuge Island 15 Item 2.1a –Pedestrian Crossings •Next Steps: –Budget Considerations –Discussions with Developer 16 Item 2.1b -Schertz Parkway-Curtiss Avenue Multi- way Stop Control Evaluation •Next Steps: –Budget Considerations –Discussions with Developer 17 Item 2.1b cont’d –Schertz Parkway-Curtiss Avenue Signal/Stop Control Warrant Analysis Warrant Hours Required Existing 2022 Explanation Hours Satisfied Condition Met 1 Eight Hour Vehicular Volume - Condition 1A 8 0 NO Threshold NOT met Eight Hour Vehicular Volume - Condition 1B 8 1 NO Threshold NOT met Eight Hour Vehicular Volume - Condition 1C 8 0 (A) 8 (B)NO Threshold NOT met. Requires 8 hours of both conditions. 2 Four Hour Volumes 4 0 NO Threshold NOT met 3 Peak Hour Volumes 1 0 NO Threshold NOT met 7 Crash Experience --NO There were three crashes that were potentially susceptible to correction by a traffic signal within the previous12 months. Threshold is NOT met. 18 Item 2.1b cont’d –Schertz Parkway-Curtiss Avenue Multi- way Stop Control Evaluation Criteria Condition Met Explanation A.Interim measure where a traffic signal has been warranted and installation is pending No Not Applicable B.Five or more crashes in a 12-month period that are susceptible to correction by a multi-way stop condition No Zero crashes applicable –existing crashes all occurred under multi-way stop control C.Minimum Volumes No Satisfied C.1 but not C.2 C.1 Major street approach volumes exceed at least 300 vehicles for any 8 hours of an average day Yes Satisfied 12 hours (8 hours required) C.2 Minor street approach volumes (vehicles, pedestrians, and cyclists) exceed at least 200 vehicles for the same 8 hours, with an average delay of at least 30 seconds per vehicle during the highest hour No Satisfied 0 hours (8 hours required) C.3 If 85th-percentile approach speed of major-street exceeds 40 mph, the minimum vehicular volume criteria may be reduced to 70%No Not applicable, posted speed limit is 35 mph D Combination Criteria: Where no single criteria are satisfied but where Criteria B, C.1, and C.2 are all satisfied to 80% of the minimum values. Criterion C.3 is excluded from this condition No Satisfied 1/3 of criteria 80% Criteria B –4 or more crashes in a 12-month period that are susceptible to correction by a multi-way stop condition No 80% Criteria C.1 (240 vehicles)Yes Satisfied 12 hours (8 hours required) 80% Criteria C.2 (160 vehicles)No Satisfied 1 hour (8 hours required) 19 Traffic Signal Warrants: Warrant 1 Eight-hour Vehicular Volume Warrant 2 Four-hour Vehicular Volume Warrant 3 Peak Hour Volume Warrant 4 Pedestrian Volume –<100 pedestrian crossing attempts per hour Warrant 5 School Crossing –not an established crossing for >20 school children/hour Warrant 6 Coordinated Signal System –signal not needed to maintain proper platooning of vehicles for progressive movement in corridor (determined based on analysis of multi-way stop evaluation) Warrant 7 Crash Experience Warrant 8 Roadway Network –no need to encourage concentration or organization of traffic flow in area Warrant 9 Intersection Near a Grade Crossing –no grade crossing nearby Item 2.1b cont’d –Schertz Parkway-Curtiss Avenue Multi- way Stop Control Evaluation 20 Warrant Study Outcomes: Warrant 1 Eight-hour Vehicular Volume –Not Met Warrant 2 Four-hour Vehicular Volume –Not Met Warrant 3 Peak Hour Volume –Not Met Warrant 7 Crash Experience –Not Met (no crash potentially susceptible to correction by a traffic signal within previous 12 months) Item 2 cont’d –Schertz Parkway-Ashley Park Signal Warrant Analysis Staff Recommendations and Next Steps: Install increased size stop signs on Schertz Parkway Investigate possibility of installing secondary signs in street center of Schertz Parkway Continue to monitor tree growth and prune or modify as appropriate Continue to monitor and observe rates of compliance Recommendations to enhance safety: •Monitor growth of median tree and trim as needed to minimize potential for future sight distance issues •Relocate stop bars closer to crosswalk to improve motorists’ adherence to stopping at stop bar (ahead of crosswalk) 21 Item 2.2 –Updates on Various Requests and Studies 2.2a –Studies regarding requests for traffic control devices: •Misty Woods Subdivision •Dimrock •Woodland Oaks (east of FM 3009) •Bench Trail •Cliffside Drive 2.2b –Request for four-way stop –Aero Drive and Oak Street 2.2c –Request for evaluation of four-way stop –Woodland Oaks and Kline Circle Status: Data collection underway! •Rhine Valley Subdivision •Westchester •Columbia •Wild Cherry 22 Item 2.3 –Street Lighting on Bench Trail •Issue: Resident concern with lack of safety due to low level of street lighting provided on Bench Trail •Status: Staff investigation confirmed areas identified as of dark due to street geometry and vegetation •Next Steps: –Staff working with GVEC to address problem spots in service area on a holistic basis –Staff working on proposed UDC update on street light placement frequency including requirements for lighting study 23 Item 3 –Chapter 86 Proposed Amendments •Chapter 86 Update –Text and formatting of ordinance and appendices being finalized –Tentatively scheduled for City Council February 28, 2023 Item 4 –Staff Comments Item 5 –Future Agenda Item Requests, Comments, or Announcements by Commissioners Item 6 -Adjournment 24 Next Meeting March 2, 2023