What are the warning signs that a driver is aggressive?

What are the warning signs that a driver is aggressive?

Reed Berry (Driving Expert) gives expert video advice on: How can I safely deal with an aggressive driver? and more...

Some of the things you can look for out on the road to spot an aggressive driver would be tailgating. Lane jumpers--the people who jump from lane to lane always trying to get ahead of other cars--are often aggressive drivers, as are horn honkers, fist wavers, and of course look out for drivers yelling at other drivers, definitely aggressive drivers.