Synthesis of Safety for Traffic Operations - Transports Canada

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Synthesis of Safety for Traffic Operations March 2003 TABLE 12.6: CMFs for Legislation and Enforcement Researcher Treatment Study Methodology No. Sites CMF Comments Ullman and Dudek Speed limit reduction in Naïve before-after 1.03 Casualty crashes 6 (1987) urban fringe areas study of crash rates 1.00 All crashes 13 0.93 80 # 60 km/h Naïve before-after Merriam (1993) Speed limit reductions 12 0.63 80 # 70 km/h study of crash rates 5 1.50 60 # 50 km/h City of Winnipeg (1991) Vogt and Bared (1999) Hadi et al (1995) Main (1984) McCoy et al (1990) Hocherman et al (1990) Ontario Provincial Police (1998) Royal Canadian Mounted Police (1999) Speed limit reduction in urban area 10 km/h speed limit reduction 1 mph speed limit reduction Prohibition of curbside parking Converting parallel to angle parking Converting to one-way operation Stepped-up police enforcement Stepped-up police enforcement Before-after study with a control group Cross-section study using EB methods Cross-section study using EB methods Naïve before-after study of crash rate Cross-sectional study of crash rates Cross-sectional study using mid-block crash rates Naïve before-after study using crash frequency Naïve before-after study using crash frequency 2 0.86 to 0.95 389 0.85 --- 0.97 to 1.00 0.96 to 1.00 6 0.63 --- --- 1.69 2.42 0.88 1.63 Applies to crashes at rural intersections with three approaches Rural Urban Low angle parking High angle parking CBD area Non-CBD 1 0.90 Casualty crashes 1 0.10 0.87 0.82 Fatal crashes Injury crashes PDO crashes Page 163
Synthesis of Safety for Traffic Operations March 2003 Researcher Treatment Study Methodology No. Sites CMF Comments N is the number of police officers Cross-sectional study 0.98 N available; Ns is the Eger (2002) Police enforcement --- using EB methods 0.9973 Ns number of county sheriff officers available Page 164
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Transport Canada Transports Canada
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Synthesis Of Safety For Traffic Ope
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DISCLAIMER The material presented h
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EXECUTIVE SUMMARY Traffic operation
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Synthesis of Safety for Traffic Ope
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TABLE OF CONTENTS DISCLAIMER REJET
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LIST OF TABLES TABLE 3.1: Crash Rat
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Chapter 1: Chapter 1: Introductio I
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Introduction Before proceeding, a f
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Introduction Literature regarding t
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Introduction The current science of
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Introduction adequate size control
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Introduction In concluding this sec
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Chapter 3: Chapter 3: Intersectio I
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Intersection Control TABLE 3.3: Cra
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Intersection Control TABLE 3.5: CMF
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Intersection Control Vancouver Regi
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Intersection Control V m = the sum
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Intersection Control where: X1 = 0
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Intersection Control Region of Durh
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Intersection Control TABLE 3.17: CM
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Intersection Control The predictor
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Intersection Control program includ
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Intersection Control TABLE 3.26: Me
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Intersection Control TABLE 3.29: St
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Intersection Control TABLE 3.32: Ni
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Intersection Control It is noted th
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Intersection Control Sayed et al (1
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Intersection Control Signal Clearan
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Intersection Control The CMFs are 0
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Intersection Control also examined
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Intersection Control Shebeeb (1995)
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Intersection Control approaches at
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Intersection Control TABLE 3.56: Sa
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Chapter 5: Chapter 5: Pavement Pave
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Pavement Markings The study methodo
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Pavement Markings Hall (1987) Hall
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Pavement Markings TABLE 5.8: Safety
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Pavement Markings THIS PAGE IS INTE
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Chapter 7: Chapter 7: Bicycle Bicyc
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Bicycle Safety TABLE 7.1: Safety Im
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Chapter 9: Chapter 9: Turn Lanes Tu
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Turn Lanes TABLE 9.2: Safety Impact
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Turn Lanes Vogt determined that a l
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Turn Lanes 1998 one of their high c
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Turn Lanes Section TABLE 9.10: Safe
Page 159 and 160: Turn Lanes A T = ADT 0.91 L 0.852 e
Page 161 and 162: Turn Lanes CMF = 1 - 0.7 P lt/d 0.0
Page 163 and 164: Turn Lanes occurred within 250 feet
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Page 168 and 169: TABLE 10.3: Speed Changes Resulting
Page 170 and 171: Sites Where Applied 1 URBAN Island
Page 172 and 173: Forbes and Gill (2000) undertook a
Page 174 and 175: Ideally, three years of before and
Page 176 and 177: Kermit and Hein (1962) looked into
Page 178 and 179: The effects of the transverse pavem
Page 180: Chapter 11: Chapter 11: Other Other
Page 183 and 184: Other Safety Issues collisions per
Page 185 and 186: Other Safety Issues THIS PAGE IS IN
Page 220: References References
Page 223 and 224: References Bloch SA (1998) “Compa
Page 225 and 226: References Hamilton Associates (199
Page 227 and 228: References Lee JT, Maleck TL, and T
Page 229 and 230: References Polanis SF (1998) “Do
Page 231 and 232: References Vancouver, City of (1999
Page 233 and 234: References THIS PAGE IS INTENTIONAL
Page 242: Appendix B: Critical R Appendix B:
Page 245 and 246: Critical Reviews Worksheet for Eval
Page 247 and 248: Critical Reviews 2. Are the expecte
Page 258: Appendix D: Appendix D: How to Use
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How to Use Safety Performance Funct
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How to Use Safety Performance Funct
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