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Location D: Summit CentralArea Area Limits SR 906: Summit Central to Yellowstone Road Jurisdiction WSDOT Summit Central, downhill skiing Speed Limit SR 906:35 mph AADT Not available Proposed Countermeasu res A series of countermeasures were selected for the Summit Central area to address both collision-related and non-collision-related concerns, as illustrated in Figure 29. ltems in bold are FHWA Proven SafetyCountermeasures. Cost Estimates Approximate planning-level costs for each countermeasure are outlined below: Table 6. Location D - Cost Estimates of Proposed Countermeasures Kittitas County I Snoqualmie Pass Comprehensive Safety Plan 54 Collision History Between 2Ot4 and 2023, there were seven reported collisions in and adjacent to this priority area, including two KSI collisions. Of these seven collisions, six collisions involved a vehicle going straight ahead. Two collisions involved a parked vehicle. All were vehicle-only collisions. 2 KSt Collisions Olthe 7 collisions: Land Use Context Shared Use Path Roadway Reconfi gu ration Speed Limit Reduction Advance warning signs and/or pavement markings forcrosswalk Pedestrian Hybrid Beacon Crosswalk Lighting 2 *o,",or,* lnvolved a parked vehicle. Were vehicle-only collisions. All Corridor Corridor Corridor Corridor Crossing Crossing Not available Not available Not available 42% 55% 40% 40% $$$ $$$$$ $ $$ Non-Collision Concerns Additional concerns were identified in this area through public comments, stakeholder feedback, and observation by the County and consultants. Concerns include: 6 "orrr"torr"lnvolved a vehicle going straight ahead. . Pedestrians crossing to Summit Central because parking area is separated from Summit Central by SR 906, resulting in frequent crossings of the highway to access the ski area. . Existing crosswalk beacon is not effective because it lacks a pedestrian push button on the west side of the highway and lacks advanced warning for drivers. . Congestion along SR 906 due to conflicts between vehicles parked along roadway and vehicles in travel lane, pedestrians in roadway to access ski area, and a continuous flow of pedestrian crossing causing traffic backups. . High speeds along SR 906 during summer when congestion is reduced and roadways are clear. $$ $$ $$Crosswalk - -- ."9-ro-':irg- Source: SCJ,2025. It is important to note that due to snow-plow activitywithin the Snoqualmie Pass area, recessed plastic pavement markings are recommended for channelization. Sufficient budget must be allocated for renewing pavement markings for the proposed solutions to be effective. " CRFS are approximated based on the data provided bythe FHWA Proven Safety Countermeasures. t Costsare based on a preliminaryengineer's estimate of magnitude. 29%7 F c:c .-:!",.2'i- Cl:.,:":e'-15 Countermeasure Application Crash reduction factor" Cost levelt