There are plenty of reasons to flash your lights at other drivers, like maybe letting them know an officer is up ahead. But did you know you can get a ticket for this?
The Texas Transportation code's section on light restrictions only addresses the high beams' distance from another car and doesn't list any exceptions.
An attorney in Florida got one man's ticket for flashing his high beams dismissed, saying he was "communicating with other drivers" an act protected by the first amendment.
FOX 7 asked Austin Police what they think about drivers warning others when they see them patrolling.
"We would hope that people would be driving safely and driving within the speed limit anyway, but if they're not and somebody else is keeping an eye out for them, good for them. They're making the roads safer for everybody else," said Veneza Aguinaga with the Austin Police Department.
There's no guarantee for other cities, but if you're driving in Austin, police say flashing your high beams for other drivers is actually doing them a service.
Some things drivers should steer clear of doing is forgetting to turn those high beams off, or having them on when directly behind or approaching another car.
According to APD, both of these could get you pulled over, driving off with a fine up to $500.