If you see tow trucks and other emergency vehicles stopped on the side of the road with their emergency lights activated, do you know what to do?Texas law requires drivers to slow down at least 20 miles per hour under the posted speed limit or, if able, to change lanes when they’re passing a first responder stopped on the roadside.Large numbers of travelers are expected on Texas roads during the Christmas and New Year’s holidays and chances are, they may break down, get involved in crashes or be stopped by law enforcement. Pay attention to what’s happening around you and ...