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Enforcement · Speed Measuring Devices


The Washington State Patrol uses electronic and laser speed measuring devices (SMD) in its speed enforcement efforts.

The courts of the state of Washington require that speed measuring devices undergo a testing and certification program for accuracy in order for evidence from the devices to be admissible in court proceedings. The WSP maintains a testing and certification program that requires each speed measuring device used by the WSP to be tested and certified for accuracy at least once every two years.

This web site allows courts, attorneys, and the general public to search for testing and certification information for all speed measuring devices used by the WSP.

To conduct a search, be sure to have the identification number (tag number) of the speed measuring device and click the following link:

SMD Expert Contact Information

No PhotoAnthony Hillock - Electronic Services Division
Washington State Patrol
2822 Euclid Avenue
Wenatchee, WA 98801-5916
Phone: (509) 682-8185
Cell: (509) 264-8798
Fax: (509) 682-8170

The Washington State Patrol has experts (above) assigned as custodians of the records and are authorized to testify in court representing the WSP on all SMD related matters. Subpoenas must have an expert's name on the request as part of the required information listed below:

  • Expert's names
  • Defendant's name
  • Date of the violation
  • Unit used - SMD number (Radar or Lidar)
  • Notice of Infraction number (ticket number)

All subpoenas are to be sent to the following address:

Anthony Hillock
321 Cleveland Ave SE, Suite A
Tumwater, WA 98501-3348

For public disclosure requests, please see our Public Disclosure web page.

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SMD Quick Links

Search Speed Measuring Devices