Almost 1000 warnings were dished out to motorists illegally using special Commonwealth Games lanes on the Gold Coast this month, but only a handful were fined.

The state government is also set to review speeds on the M1, which were reduced by 10km/h for the duration of the Games, following early indications they reduced the number of crashes on Queensland's busiest road.

Early indications suggest the lowered speed limits on the M1 reduced crashes. Credit:Alamy

A police spokeswoman said 10 fines were issued to motorists for incorrectly using Games lanes, worth $252 each, while there were 942 warnings.

On April 3, on the eve of the Games, Main Roads Minister Mark Bailey said police had issued warnings, but no tickets, for the offence since the lanes came into effect four days earlier.