Chapter 5. Summary of Results

In the 2020 Traffic Incident Management Capability Maturity Self-Assessment (TIM CM SA), the average overall score was 70.0 percent (out of 100 percent). Mean scores were calculated for the top 40 metropolitan areas (by population), top 75 metropolitan areas, and non-top 75 metropolitan areas. The Tactical section received the highest scores (75.9 percent). The Strategic section had the largest percentage increase (9.9 percent) in scores from the baseline.

The six lowest-scoring questions appeared in the Traffic Incident Management Performance Measures (TIM PM) subsection, shown in table 11. The TIM PM subsection has historically seen lower scores ever since the initial assessments in 2003. For five of the six questions, less than 50 percent of respondents scored their programs with a 3 or higher. This indicates additional work is needed in the TIM PM area.

Table 11. Lowest-scoring questions in 2020.
Question	2020 Average Score	Percent of TIM CM SA Scoring 3 or Higher
20. Has the TIM program established performance targets for a reduction in the number of Secondary Crashes?	1.6	15.2
21. How does your agency use Secondary Crash performance data to influence your TIM operations?	1.9	29.3
16. Has the TIM program established performance targets for ICT?	2.1	36.4
17. How does your agency use ICT performance data to influence your TIM operations?	2.3	47.5
18. Is the number of Secondary Crashes being measured and used? FHWA defines Secondary Crashes as the “number of unplanned crashes beginning with the time of detection of the primary crash where a collision occurs either a) within the incident scene or b) within the queue, including the opposite direction, resulting from the original incident.”	2.3	55.6
19. How is data for the number of Secondary Crashes collected?	2.3	49.5

FHWA = Federal Highway Administration. ICT = incident clearance time. TIM = traffic incident management. TIM CM SA = Traffic Incident Management Capability Maturity Self-Assessment.

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