Merging across un-broken lines, tailgating and remaining in the right-hand lane after overtaking are all illegal manoeuvres that are increasing driving times during the peak-hour commute. 

University of Queensland traffic engineer Adam Pekol says tailgating alone can lead to traffic gridlock if cars are forced to brake suddenly to avoid a collision with the vehicle in front. 

Police say last year, 771 Queenslanders were fined $80 and two demerit points for these offences.

Mr Pekol says better driver behaviour including maintaining a safe distance and adjusting vehicle speed according to the conditions will help ease congestion on our state’s roads.