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Page 2 Annual Collision Analysis 2023 Summary This report summarizes the collisions within the City in 2022 and analyzes trends and patterns to identify changes that can be made to reduce the number of collisions. Reported traffic collisions involving vehicles, bicyclists and pedestrians are reviewed on a weekly basis by Traffic Engineering. The weekly review looks at individual collisions to determine if improvements can be made to improve safety. This annual report takes a comprehensive look at the one-year and three-year trends to identify larger patterns and improvements that can improve safety. Improvements are countermeasures designed to address a collision pattern. The Federal Highway Administration and CalTrans collaborated to match typical collision patterns with proven countermeasures to improve safety by cataloging them into tables which appear in Section 4.2 of the CalTrans Local Road Safety Manual (LRSM). This report utilizes these tables to identify solutions to the City’s collision patterns. The full list of countermeasures is included as an attachment to this report1. Unlike other local road safety plans, which may be renewed every few years, city staff elected to commission collision analysis and improvements reports yearly to provide the most flexibility identifying collision trends and implementing countermeasures. Volume Trends The pandemic caused a significant decrease in vehicle traffic and a corresponding decrease in overall collisions. However, traffic has largely returned to at or near pre-pandemic levels. This trend has been reported by multiple transportation agencies and a sampling of key Pleasanton intersections showed the trend locally. Collision Trends The total number of collisions for the current year2 was approximately 12% more than the prior year’s number of collisions (274 compared to 246) but equal to the previous three-year average3 of 276. The increase is consistent with the increase in traffic volume from the previous year as traffic returns to pre-pandemic volumes. The collision trends have mirrored the traffic volumes. 1 The full countermeasures list is included as Attachment “A” to this report 2 Reported traffic collisions that occurred between 12/01/2021 and 11/30/2022 are included in the “current year” 3 The previous three-year period is 12/01/2018 to 11/30/2021 15332768282461128276PEDESTRIAN BICYCLE TOTAL TRENDS Current Year Last Year Previous 3 Year Average 33% 56%63%67%67% 73%79%82%78%72% 86%89%86%85% 0% 20% 40% 60% 80% 100%11/5/20192/4/20204/7/20206/9/20208/4/202011/3/20202/4/20213/11/20215/4/20217/13/202111/9/20211/11/20223/29/20225/10/202211/15/20221/24/2023Traffic Volume Change