A local MP has warned Solihull will be placed in a "straitjacket" by the expansion of Birmingham International Airport.
Caroline Spelman, Conservative MP for Meriden was reacting to yesterday's publication of the draft BIA master plan, containing proposals for a second runway, an extension to the current runway and a third terminal.
By 2030, the plan predicts, the airport will be dealing with more than three times the passengers it handles today.
Ms Spelman said: "The projected date for completing the second runway and coping with the capacity for 30 million plus passengers has slipped to 2030 but the surprise in the plan is the determination to extend the existing runway as originally set out in the last Unitary Development Plan for the borough.
"It was never clear in the government's White Paper whether this was still part of the overall expansion plans.
"The latter would have serious implications for the local infrastructure, notably the need to tunnel the A45.
"There is no indication where the money would come from for this or the necessary improvements to the West Coast Mainline, the M42 and surrounding roads.
"If the airport expansion were to go ahead without these, Solihull would be placed in a straitjacket, south cut off from north, and unbearable congestion on our local roads."
However, a spokesman for BIA responded by pointing out the government's Aviation White Paper in 2003 had been "explicit" in showing the extended runway as part of plans for a second runway.
He said: "This matter has been consistently covered at briefings to the media, the Airport Consultative Committee, and to people's representatives."
He added: "We recognise that there will have to be improvements, that's why the local realignment of the A45 has been planned.
"This will also ensure that there is space for the Metro extension, thus increasing public transport opportunities."
He added £10 billion was currently being spent on the West Coast Main Line and stated the airport's share of passengers arriving by public transport was currently at
18.3 per cent and rising.
Meanwhile, Jerry Blackett, policy director of Birmingham Chamber of Commerce and chairman of the West Midlands Business Transport Group, said it was vital that the Government was now pressed into action by the region's businesses.
"It is important that we get the Government to commit to expand the supporting infrastructure.
"If we are to be ready for an expanded runway by 2012, we probably have less than 12 months to get firm commitments on widening the M42 and improving local road and rail access."
A spokesman for regional transport bodies Centro and the Passenger Transport Authority called for close cooperation with the airport to ensure public transport provision was improved as passenger numbers grew.
"BIA is already blessed with better public transport infrastructure than many airports and the master plan should aim to build on these strengths.
"Any development of this scale needs to give serious consideration to public transport."
Debbie Thomas, public affairs director for the NEC Group, welcomed the airport plans.
"By working together with the airport for the future, through the master plan process, we will be able to both safeguard and also create thousands of jobs for the region and ensure the West Midlands remains at the forefront of the exhibition and convention industry."