Integrating Speed Management within Roadway Departure, Intersections, and Pedestrian and Bicyclist Safety Focus Areas

Program Contact

Guan Xu
Guan.Xu@dot.gov
(202) 366-5892

Appendix A. Evaluation of the Role of Speeding in Crashes and Safety-Critical Events

1. Executive Summary
2. Analysis of the role of Speeding in Crashes Using FARS and GES Data
	2.1 Definition of Speeding-Related Crashes
	2.2 Speeding-Related Crashes at the National Level
	2.3 Vehicle Characteristics
	2.4 Roadway And Environmental Characteristics
	2.5 Summary
3. Analysis of the Role of Speeding-Related Fatal Crashes at Intersections Using Fars Data
	3.1 Roadway Characteristics
	3.2 Driver Characteristics
	3.3 Environmental Characteristics
	3.4 Vehicle Type
	3.5 Crash Type
	3.6 Characteristics of Angle Crashes
	3.7 Characteristics of Rear-End Crashes
	3.8 Characteristics of Left-Turn Crashes
4. Speeding-Related Fatal Roadway Departure Crashes
	4.1 Roadway Characteristics
	4.2 Driver Characteristics
	4.3 Environmental Characteristics
	4.4 Vehicle Type
	4.5 Crash Type
	4.6 Characteristics of Rollover Crashes
	4.7 Characteristics of Opposing Direction Crashes
	4.8 Characteristics of Tree Crashes
5. Speeding-Related Crash Data for Pedestrian and Bicylists
	5.1 Roadway Characteristics
	5.2 Driver Characteristics
	5.3 Environmental Characteristics
	5.4 Vehicle Type
6. Analysis of the Role of Speeding in Safety-Critical Events Using SHRP 2 Data
	6.1 Description of Definitions
	6.2 Comparison of Speeding for Safety-Critical Events to Baseline Events
	6.3 Typology of Safety-Critical Events
	6.4 Study Limitations
	6.5 Recommendations and Suggestions for Future Research
7. References
Appendix A - Safety Focus Groups
Appendix B - Additional Resources
Appendix C - Gaps And Needs In Research

List of Tables

Table 1		Variable Coding Used in FARS and GES Datasets
Table 2		Speeding versus Not Speeding by Roadway Type for All Safety-critical Events
Table 3		Speeding versus Not Speeding by Roadway Type for Roadway Departure Safety-critical Events.
Table 4		Speeding versus Not Speeding by Roadway Type for Rear-End Safety-critical Events
Table 5		Speeding versus Not Speeding at Signalized Intersections by Roadway Type
Table 6		Speeding versus Not Speeding at Stop-controlled Intersections by Roadway Type
Table 7		Speeding versus Not Speeding at Yield-controlled Intersections by Roadway Type

List of Figures

Figure 1	Trend in Fatalities and Speeding-related Fatalities in the United States
Figure 2	Percentage of Crashes by Injury Type that are Speeding-related
Figure 3	Percentage of Crashes by Crash Category
Figure 4	Percentage of Speeding-related Crashes by Crash Category
Figure 5	Distribution of Fatal Speeding-related Crashes by Manner of Collision
Figure 6	Distribution of Fatal Non-Speeding-related Crashes by Manner of Collision
Figure 7	Distribution of Driver Age Involved in Speeding-related Fatal Crashes
Figure 8	Distribution of Drivers Involved in Fatal Crashes by BAC
Figure 9	Percentage of Drivers Involve in Fatal Crashes by Previous Convictions
Figure 10	Distribution of Vehicles Involved in Speeding-related Fatal Crashes
Figure 11	Distribution of Vehicles Involved in Non-Speeding-related Fatal Crashes
Figure 12	Distribution of Speeding-related Fatal Crashes by Roadway Function Class
Figure 13	Distribution of Non-Speeding-related Fatal Crashes by Roadway Function Class
Figure 14	Percentage of Vehicles Involved in Crashes that are Speeding-related by Speed Limit Category
Figure 15	Percentage of Speeding-related Crashes by Work Zone Category
Figure 16	Percentage of Speeding Drivers in Fatal Crashes, by Roadway Surface Condition
Figure 17	Distribution of Vehicles Involved in Fatal Speeding-related Crashes by Horizontal Alignment
Figure 18	Distribution of Vehicles Involved in All Speeding-related Crashes by Horizontal Alignment
Figure 19	Distribution of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Intersection Traffic Control
Figure 20	Percentage of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Intersection Traffic Control
Figure 21	Distribution of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Intersection Type
Figure 22	Distribution of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Type of Roadway
Figure 23	Percentage of Vehicles Involved Speeding-related Fatal Intersection Crashes by Type of Roadway
Figure 24	Distribution of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Speed Limit (MPH) of Corresponding Approach
Figure 25	Percentage of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Speed Limit (MPH) of Corresponding Approach
Figure 26	Percentage of Drivers by Age and Gender Involved in Speeding-related Fatal Intersection Crashes
Figure 27	Distribution of Speeding-related Fatal Crashes by BAC
Figure 28	Percentage of Drivers Involved in Fatal Intersection Crashes by BAC
Figure 29	Distribution of Speeding-related Fatal Intersection Crashes by Time of Day
Figure 30	Percentage of Speeding-related Fatal Intersection Crashes by Time of Day
Figure 31	Distribution of Speeding-related Fatal Intersection Crashes by Hour of Day
Figure 32	Percentage of Fatal Intersection Crashes that are Speeding-related by Hour of Day
Figure 33	Distribution of Speeding-related Fatal Intersection Crashes by Roadway Surface Condition
Figure 34	Distribution of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Type of Vehicle
Figure 35	Percentage of Vehicles Involved in Speeding-related Fatal Intersection Crashes by Type of Vehicle
Figure 36	Distribution of Speeding-related Intersection Fatal Crashes by Crash Type
Figure 37	Distribution of Speeding-related Intersection Fatal Crashes by First Harmful Event
Figure 38	Distribution of Vehicles Involved Speeding-related Fatal Angle Crashes at Intersections by Speed Limit
Figure 39	Distribution of Drivers Involved in Speeding-related Fatal Angle Crashes at Intersections by BAC
Figure 40	Distribution of Vehicles Involved in Speeding-related Fatal Angle Crashes at Intersections by Roadway Surface Condition
Figure 41	Distribution of Vehicles Involved in Speeding-related Fatal Angle Crashes at Intersections by Vehicle Type
Figure 42	Distribution of Vehicles Involved in Speeding-related Fatal Rear-end Intersection Crashes by Speed Limit
Figure 43	Distribution of Drivers Involved in Fatal Rear-End Intersection Crashes that are Speeding-related by BAC
Figure 44	Distribution of Vehicles Involved in Speeding-related Fatal Rear-end Intersection Crashes by Roadway Surface
Figure 45	Distribution of Vehicles Types Involved in Speeding-related Fatal Rear-end Intersection Crashes
Figure 46	Distribution of Vehicles Involved in Speeding-related Fatal Left-turn Intersection Crashes by Speed Limit
Figure 47	Distribution of Drivers Involved in Speeding-related Fatal Left-turn Intersection Crashes by BAC
Figure 48	Distribution of Drivers Involved in Fatal Rear-End Intersection Crashes that are Speeding-related by BAC
Figure 49	Distribution of Vehicles Involved in Speeding-related Left-turn Intersection Fatal Crashes by Vehicle Type
Figure 50	Distribution of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Type of Roadway
Figure 51	Percentage of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Type of Roadway
Figure 52	Distribution of Vehicles Involved in Speeding-related Roadway Departure Fatal Crashes by Speed Limit (MPH) of Corresponding Approach
Figure 53	Percentage of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Speed Limit (MPH) of Corresponding Approach
Figure 54	Distribution of Vehicles Involved in Speeding-related Single-vehicle Roadway Departure Fatal Crashes by Speed Limit (mph) of Corresponding Approach
Figure 55	Distribution of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Curve Type
Figure 56	Percentage of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Horizontal Alignment
Figure 57	Percentage of Drivers Involved in Speeding-related Roadway Departure Fatalities by Driver Age and Gender
Figure 58	Distribution of Drivers Involved in Speeding-related Fatal Roadway Departure Crashes by BAC
Figure 59	Distribution of Speeding-related Fatal Road Departure Crashes by Time of Day
Figure 60	Distribution of Speeding-related Road Departure Fatal Crashes by Hour of Day
Figure 61	Percentage of Speeding-related Fatal Roadway Departure Crashes by Hour of Day
Figure 62	Distribution Vehicles Involved in Speeding-related Fatal Roadway Crashes by Roadway Surface Condition
Figure 63	Distribution of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Type of Vehicle
Figure 64	Percentage of Vehicles Involved in Speeding-related Fatal Roadway Departure Crashes by Type of Vehicle
Figure 65	Distribution of Fatal Speeding-related Roadway Departure Crashes by Crash Type
Figure 66	Distribution of Speeding-related Fatal Roadway Departure Crashes by First Harmful Event
Figure 67	Distribution of Vehicles Involved in Speeding-related Rollover/Overturn Fatal Crashes by Speed Limit
Figure 68	Distribution of Drivers Involved in of Speeding-related Rollover/Overturn Fatal Crashes by BAC
Figure 69	Distribution of Vehicles Involved in Speeding-related Rollover/Overturn Fatal Crashes by Roadway Surface Condition
Figure 70	Distribution of Vehicles Involved in Speeding-related Rollover/Overturn Fatal Crashes by Vehicle Type
Figure 71	Distribution of Vehicles Involved in Speeding-related Fatal Opposing Direction Crashes by Speed Limit
Figure 72	Distribution of Vehicles Involved in Speeding-related Fatal Opposing Direction Crashes by BAC
Figure 73	Distribution of Vehicles Involved in Speeding-related Fatal Opposing Direction Crashes by Roadway Surface
Figure 74	Distribution of Vehicles Involved in Speeding-related, Fatal, Opposing-Direction Crashes by Vehicle Type
Figure 75	Distribution of Vehicles Involved in Speeding-related, Tree-Impact, Fatal Crashes by Speed Limit
Figure 76	Distribution of Drivers Involved in Speeding-related Tree Impact Fatal Crashes by BAC
Figure 77	Distribution of Vehicles Involved in Speeding-related Tree Impact Fatal Crashes by Roadway Surface Condition
Figure 78	Distribution of Vehicles Involved in of Speeding-related, Tree-impact, Fatal Crashes by Vehicle Type
Figure 79	Distribution of Speeding-related Fatal Pedestrian and Bicycle Crashes by Location
Figure 80	Distribution of Speeding-related Fatal Pedestrian and Bicycle Crashes by Type of Roadway
Figure 81	Distribution of Vehicles Involved of Speeding-related Fatal Pedestrian and Bicycle Crashes by Posted Speed Limit
Figure 82	Percentage of Fatal Pedestrian and Bicycle Crashes that are Speeding-related by Posted Speed Limit
Figure 83	Distribution of Drivers Involved in All Fatal Pedestrian and Bicycle Crashes by Age and Gender
Figure 84	Distribution of Drivers Involved in Speeding-related Fatal Pedestrian and Bicycle Crashes by Age and Gender
Figure 85	Percentage of Speeding-related Fatal Pedestrian and Bicycle Crashes by Driver BAC
Figure 86	Distribution of Speeding-related Fatal Pedestrian and Bicycle Crashes by Time of Day
Figure 87	Distribution of Speeding-related Fatal Pedestrian and Bicycle Crashes by Hour of Day
Figure 88	Percentage of Speeding-related Fatal Pedestrian and Bicycle Crashes by Vehicle Type

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Page last modified on May 23, 2016