Synthesis of Safety for Traffic Operations - Transports Canada

LIST OF TABLES
TABLE 3.1: Crash Rates at Rural High-Speed Intersections in Kentucky 15
TABLE 3.2: The Effect of Signalization of Crashes in Kentucky 15
TABLE 3.3: Crash Severity for Kentucky Intersections 16
TABLE 3.4: Safety Impacts of Signalization in San Buenaventura, California 16
TABLE 3.5: CMFs for a Change in Approach Control 18
TABLE 3.6: Safety Impacts of Signalization in South Dakota 18
TABLE 3.7: SPFs for Ontario Signalized Intersections 19
TABLE 3.8: Data Ranges Used in Developing SPFs for Urban, Unsignalized
Intersections 20
TABLE 3.9: SPFs for Urban, Unsignalized Intersections in BC 20
TABLE 3.10: Overdispersion Parameters from Vogt (1999) 22
TABLE 3.11: Safety Effects of Signal Installation in the United Kingdom 23
TABLE 3.12: Intersection Characteristics for SPFs from California 23
TABLE 3.13: Region of Durham – Signalized Intersections 26
TABLE 3.14: Region of Durham – Unsignalized Intersections 26
TABLE 3.15: Region of Halton – Signalized intersections 27
TABLE 3.16: Region of Halton – Unsignalized intersections 27
TABLE 3.17: CMFs for Signalization (Thomas and Smith) 28
TABLE 3.18: CMFs for Signalization Plus Turn Lane Construction (Thomas
and Smith) 28
TABLE 3.19: Safety Effects of Signalization in Waterloo, Ontario 29
TABLE 3.20: Estimated Parameters for Florida SPFs (All Crashes) 30
TABLE 3.21: Characteristics of Intersections used to Develop Pedestrian
SPFs 31
TABLE 3.22: Parameters for SPFs for Pedestrian Intersection Crashes 31
TABLE 3.23: CMFs for Conversion to All-way Stop 32
TABLE 3.24: CMFs for All-direction Stop Control in Chicago 32
TABLE 3.25: CMFs for Regular Patterns of Stop Control 34
TABLE 3.26: Mean Crash Rates at Stop- and Stop+Beacon Controlled
Intersections 36
TABLE 3.27: Safety Impacts of Signal Upgrades in South Dakota 37
TABLE 3.28: Safety Effects of Signal Modifications in the United Kingdom 37
TABLE 3.29: Study Site Characteristics for White Strobes to Supplement
Red Signal Indications 38
TABLE 3.30: Crash Results for White Strobes to Supplement Red Signal
Indications 38
TABLE 3.31: Safety Impacts of Alternative Signal Head Design in BC 39
TABLE 3.32: Night-time Crash Frequency at Locations with Modified Signal
Heads in BC 40
TABLE 3.33: Safety Effects of New Signal Heads in Waterloo, Ontario 40
TABLE 3.34: Safety Impacts of Signal Head Location in Kansas City 41
TABLE 3.35: CMFs for Replacing Pedestal-Mounted Signal Heads with
Mast Arm-Mounted Signal Heads (Thomas and Smith) 42
TABLE 3.36: Safety Impacts of An Additional Primary Signal Head 43
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