Use the shoulder for emergencies only
It is illegal in some states to use the shoulder for anything but emergencies. Never use the shoulder to weave through traffic. Not only could you get a ticket, but you could also be blocking the shoulder from emergency vehicles that need to get through traffic.
Use the exit lane only to exit
Though it may be legal to do so in some states, it’s bad manners to use an exit lane to speed through traffic. Plus, swerving in and out of traffic unnecessarily can be dangerous. Check out these summer car tips every driver should know.
Leave at least one car length between you and the car in front of you when possible. Try this trick: pick a landmark on the road such as a sign or tree and watch for the car in front of you to pass it. Then, make sure you can count three seconds before you pass the same landmark. Never tailgate—not only is it rude, it could also cause an accident if the drive in front of you stops short.