COEUR D’ALENE, Idaho—Law enforcement in the region will be increasing their patrols for “the deadliest days of summer” starting July 21.

Officials said The 100 Deadliest Days mobilization aims to educate drivers about making safe decisions on the roadways.

The deadliest days of summer start during Memorial Day and last through Labor Day.

Research from the National Highway Safety Administration said 94 percent of traffic crashes can be tied back to human behavior and bad decisions made by somebody in the car.

Authorities said the top three contributing factors in Idaho crashes are aggressive driving, distracted driving and impaired driving.

Reports said the top three factors that cause car accidents in Washington state are drunk driving, speeding and distracted driving.

More than 40 state and local agencies across Idaho will be participating in the effort to prevent crashes.