How often are you aggressive behind the wheel, and how many rude acts do you see from other drivers?

Drivers in Washington and Oregon were asked how often they committ aggressive acts behind the wheel – things like tailgating, speeding, erratic moves, and even rude gestures – and how aggressive they perceive other drivers to be. Compared to results from the past five years, Washington drivers tend to report engaging in slightly fewer aggressive acts.
Washington Engage Witness
Frequency of aggression 2010 2012 2013 2015 2010 2012 2013 2015
None 50 61 60 56 3 4 4 4
1 - 2 times 31 22 27 30 8 15 17 17
3 - 4 times 9 9 8 9 17 23 23 24
5 - 9 times 5 3 2 2 20 17 20 18
10+ times 5 3 4 2 51 37 36 35
Average # times / past month 1.8 1.4 1.5 1.3 12.1 9.8 9.3 8.8
Over time, Portland Metro drivers report witnessing fewer aggressive driving behaviors from other Portland Metro drivers, but drivers report no differences in their aggressive driving behaviors between 2011 and 2015.
Portland Metro Engage Witness
Frequency of aggression 2010 2012 2013 2015 2010 2012 2013 2015
None 64 61 57 56 5 5 4 4
1 - 2 times 25 27 30 29 12 13 16 17
3 - 4 times 5 6 8 7 19 22 20 20
5 - 9 times 3 3 3 4 23 23 23 19
10+ times 3 4 2 2 40 36 37 35
Average # times / past month 1.2 1.3 1.2 1.2 10.0 9.1 9.6 8.9
In Washington, there is a trend showing that millennials (those under 35) may be less aggressive today than they were two years ago. The older age group doesn’t show a similar decreasing trend in aggressive acts.
Washington 2015 Personally Engage in Aggressive Acts
November 2013 November 2015
Frequency of aggression < 35 years 35+ years < 35 years 35+ years
None 37 67 39 63
1 - 2 times 36 24 39 26
3 - 4 times 19 4 14 7
5 - 9 times 3 2 5 1
10+ times 5 3 4 2
Average # times / past month 2.6 1.2 2.0 1.0