A survey by parking and tolling tag provider easytrip found more than six in ten respondents gave that as their top gripe about fellow motorists.
Only a tad over half gave using a mobile phone while driving as an annoyance, while 43pc said the throwing of rubbish out the window made them angry.
Other criticisms included changing lanes too frequently (42pc) and not merging correctly from slip road onto motorways (40pc).
