The article notes:
Pinpointing exactly how often guns are used to settle road-rage disputes is a difficult proposition. The NHTSA and the Dept. of Transportation do not keep track of road-rage incidents, gun or otherwise.
In a study, the AAA Foundation analyzed police reports of more than 10,000 road-rage incidents committed over a seven-year period and found they resulted in at least 12,610 injury cases and 218 murders.
Although it may be hard to quantify, traffic experts and regular drivers alike agree that road rage is getting worse.
The article concludes with the advice "do not retaliate against a road-rage instigator. You have no idea whether the person has a weapon. Be smart. Try to leave the area of the instigator as quickly and safely as possible. Call 911 as fast as possible."