Managing director of MasterDrive, Eugene Herbert, said: "If you are driving at 80km/h in the ‘fast lane’ of the highway and other drivers are coming up behind you at speeds of 120km/h, maybe even faster, you are creating a very dangerous situation. While 80km/h is the minimum speed limit, and therefore legal, it is still not the safest option in the fast lane."
READ: If you're slow in the fast lane 'you're a danger on the road'
Voting booth
We asked our readers in a poll what they think of slow drivers using the 'fast lane':
'It causes unnecessary congestion' - 3792 votes, 24%
'They should be fined for creating unsafe road conditions' - 8328 (53%)
'I usually overtake and return to the fast lane' - 1777 (11%)
'Not a problem, it's speeding drivers that are the real issue' - 1794 (11%)
Wheels24 readers share their driving pet peeves: