Nothing matches the road rage of car and van drivers, which is getting
worse.
http://driving.ca/auto-news/news/why-is-road-rage-anger-getting-worse-experts-say
'We’re a snippy, short-tempered lot. Road rage statistics continue to
rise, though it isn’t really a new thing. A State Farm survey last year
found one in three drivers self-reported engaging in road rage-ish
behaviour, most commonly triggered by tailgaters and distracted drivers.'