Got a seatbelt? Better use it.

City, county and state law enforcement officers are gearing up for another statewide Click It or Ticket seat belt mobilization between May 24 and June 6.

Officers are expected to be particularly vigilant at night following research that shows nighttime unbuckled drivers are twice as likely as daytime buckled drivers to have criminal records for offenses that involve violence.

The Click It or Ticket seat belt patrols moved to the hours of darkness three years ago because the traffic death rate at night is four times higher. Officials also expected the research to show that nighttime unbuckled drivers have worse driving records, which proved true.

The research also uncovered surprising findings about the criminal histories of nighttime unbuckled drivers. Compared to people who drive during the day with their seat belt on, nighttime unbuckled drivers are:

* Three times as likely to have a felony record.

* Twice as likely to have a criminal record for offenses that involves violence.

* Three times more likely to have a DUI on their record.

* More than two times more likely to have a negligent or reckless driving violation on their driving record.

* Worse driving records in general.

Researchers observed drivers pulling into gas stations in five Washington cities during a 24-hour period over the course of 18 months. The driving records and criminal records of 5,035 motorists were analyzed. Comparisons were made between those who buckle up and those who don’t, and those who ride unbuckled during the day and at night. The research was conducted on contract through the National Highway Traffic Safety Administration.

Observational surveys of motorists were conducted during the day and at night to determine seat belt use rates.

“We were very pleased to find that, despite the focus on nighttime unbuckled drivers, our statewide use rate during the day didn’t fall,” said Lowell Porter, Washington Traffic Safety Commission director.

In King County, law enforcement from the Bellevue, Auburn, Black Diamond, Burien, Issaquah, Kenmore, Kent, Maple Valley, Redmond, Renton, SeaTac and Shoreline police departments and the Washington State Patrol will be conducting extra seat belt patrols during the May 24-June 6 patrol.

Washington has one of the highest seat belt use rates in the United States and has had since the Click it or Ticket Project began in 2002. The latest daytime observational survey showed seat belt use at 96.4 percent. The Click it or Ticket Project and the primary enforcement seat belt law resulted in a 21 percent drop in vehicle occupant deaths, from an average of 518 from 1995 to 2002, to an average of 410 from 2003 to 2009. During those same time periods serious injuries from traffic crashes dropped 25 percent.

“It is because of these intensive seat belt efforts, combined with other traffic safety efforts across the state, that we continue to have more than 100 fewer traffic deaths each year in Washington,” Porter said.

Medical costs from traffic crashes amount to more than $276 million each year. A research study conducted by Harborview Injury Prevention and Research Center in Seattle found that an unbuckled motorist’s medical bills amount to $11,000 more per collision than that of a belted motorist.

More information is available at the Washington Traffic Safety Commission, visit www.wtsc.wa.gov.