Work has started on a £1 million scheme to expand park and ride facilities at four West Midlands rail stations - two years ahead of schedule.
The work at Acocks Green, Whitlocks End, Chester Road and Wylde Green was not due to start until at least 2008 but last year transport councillors chose to bring the work forward due to the high demand for spaces during rush hour.
The projects are due to be completed in April. The four car parks already provide parking for more than 260 cars but are still full on most weekdays.
The West Midlands Passenger Transport Authority and its executive Centro will now supply nearly 200 extra spaces to help satisfy demand and prevent parking problems on nearby streets.
"I'm very pleased that work on these park and ride sites has been brought forward," said PTA chairman Councillor Gary Clarke (Con Streetly).
"The growing number of park and ride spaces are proving very popular with West Midlands' commuters and make an important contribution to tackling congestion in the region."
Each extended site will also have new security features and lighting, measures which Centro claims have led to a reduction in vehicle crime and anti-social behaviour in station car parks across the region.
Centro-PTA provides about 6,000 free, secure park and ride spaces in the West Midlands, which, it is claimed, take 2.5 million car journeys off the region's roads every year, saving the equivalent of nearly 60,000 litres of fuel.