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Incident Response - Incidents & clearance times

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Incident Response measures showing total incidents and clearance times

Incident Response numbers and clearance times

WSDOT Incident Response personnel collect data for all incidents to which an IR team responds in the Washington Incident Tracking System. This data includes times of first awareness, arrival on scene, roadway clearance, and incident clearance which allows WSDOT to analyze various aspects of incident duration. IR teams also record other data such as how they were notified of the incident, incident cause and how many lanes of travel were blocked.

Incidents are the total number of events that WSDOT Incident Response teams responded including incidents that are unable to locate.

Incident clearance times are the average time between the first recordable awareness of the incident (detection, notification, or verification) and the time the last responder has left the scene.

For details on the methodology used to calculate, see WSDOT’s Handbook for Corridor Capacity Evaluation (pdf 5.9 mb).

Source: Washington Incident Tracking System.

Note: The data above only accounts for incidents to which an IR unit responded.


Multi-year trends

The total number of incidents that the WSDOT IR teams responded to increased by 26.6% from 50,092 incidents in 2015 to 63,404 incidents in 2019. The average clearance times during this five-year period ranged from 12 to 13 minutes.

Annual highlights

In 2019, IR teams responded to 63,404 incidents, which is 6% more than 59,803 incidents in 2018. The average clearance time in 2018 and 2019 remained steady at 13 minutes.

In 2018, IR teams responded to 59,803 incidents, which is 3.4% fewer than 61,913 incidents in 2017. The average clearance time in 2018 was 13 minutes and 8 seconds.

In 2017, IR teams responded to 61,913 incidents, which is 6.3% more than 58,235 incidents in 2016. The average clearance time in 2017 was 12 minutes and 30 seconds.

In 2016, IR teams responded to 58,235 incidents, which is 16.3% more than 50,092 incidents in 2015. The average clearance time in 2016 was 12 minutes and 3 seconds.

In 2015, IR teams responded to 50,092 incidents. The average clearance time was 12 minutes and 45 seconds.

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