Transport campaigners have launched a petition calling on Hertfordshire County Council to merge bus routes in St Albans, in a bid to stop buses "idling" in the city centre.

The e-petition, running on the county council’s website, says that currently there are too few buses in the city’s suburbs.

And, it says, many services terminate in the city centre where the buses "idle emitting fumes".

According to the petition, started by Paul Spelzini, from the Potters Bar and St Albans Transport User Group, the services should be merged, so they run across the city centre and terminate in the suburbs.

The petition states that would stop buses "idling" in the town centre, which it says would cut congestion and could reduce CO2 emissions by more than 4000 tonnes a year.

The petition reads: "Merging bus routes would stop buses idling all day in the city centre and significantly reduce congestion and CO2 emissions with a few simple changes that cost very little.

"It is estimated this could save 4000+ tonnes of CO2 a year."

The e-petition is due to run on the county council website until October 3.