Law enforcement agencies across the state are increasing patrols over the holiday and through the weekend to crack down on drunk driving.
They'll also look for signs of impaired, distracted, reckless and aggressive driving.
Last year, state police issued nearly 10,500 vehicle and traffic tickets during the Fourth of July holiday.
Troopers arrested 240 people for DWI and investigated 152 crashes, which resulted in three fatalities and 248 injuries.
Motorists can expect sobriety checkpoints and DWI patrols.
The Fourth of July holiday is considered one of the deadliest. Nationwide data shows 146 people died in alcohol-related crashes in 2015.
Two-thirds of those crashes involve at least one driver with a blood alcohol content nearly or more than twice the legal limit.
Police agencies also crack down on drunk driving during the Labor Day, Halloween, Christmas, and New Year's holidays.