The Vale of Glamorgan Council is to trial allowing motorcycles to use bus lanes along two routes in the county.
Under the scheme, they would be able to travel within the lanes for several hundred metres on Port Road, between Barry and Culverhouse Cross, and a section of Cardiff Road, from Eastbrook in Dinas Powys to the Merrie Harrier junction.
The move comes after representations from motorcyclists and motorcycling groups and the successful introduction of similar measures in other parts of the country.
It is designed to improve safety for motorcyclists and can also help combat congestion.
initially, mopeds and motorcycles would be able to use the selected bus lanes on a trial basis for 12 months, during which time the public will be able to express their views on the matter.
If the pilot is positive, the policy would be made permanent and could be extended to future bus lanes.
Councillor Neil Moore, Leader of the Vale of Glamorgan Council said: "There is significant evidence to support the benefits of allowing motorbikes and mopeds to use bus lanes from similar experiments in other parts of the country.
"Not only does such a move improve safety for motorcyclists, it also eases congestion and can raise air quality.
"I'm sure this venture will be a success and may even reduce congestion.
"This will also add a degree of consistency through Welsh Unitary Council areas."