Very erratic driving
Cutting in and out of lanes, heavy braking and acceleration rather
than proceeding smoothly, unnerves other road users and can
easily cause accidents.
Bad roundabout etiquette
Slamming on the brakes, driving around in the wrong
lane, pulling out when there is someone coming, and
pulling on to a roundabout when your exit is blocked
and clogging it up are all very annoying habits.
Driving with fog lights on
when not needed
Other drivers really hate it when other road users dazzle
them with their fog lights on when they aren’t needed.
They should only be used in visibility under 100m.
Poor lane discipline
Undertaking, hogging the middle lane, and veering
across more than one lane at once are all annoyances
for other drivers.
Apparently, the most irritating bad driving habit
is drivers who don’t indicate. Without indicating,
other drivers have no way of knowing what you
are going to do. It's not just annoying, it is
potentially dangerous and could lead to an