Traffic lights will soon be switched on at German Church Road and Cleveland-Redland Bay Road after a $4.6million partnership between the State Government and local developer Fox and Bell, which is building the adjacent Redlands Business Park.

Banksia Street resident Hayley Fisk said she drives through the intersection up to four times a day for work and other commitments.

"Every morning I'd get to the intersection and just pray there wouldn't be an accident," Ms Fisk said.

"I've been driving for five years now, and my younger sister has just got her P-Plates, but I'm glad my younger two sisters won't have to learn on that intersection like we did.

"People are at least slowing down now because the road works are visible."

Thornlands resident Bob Barnes works at RecycleLand on German Church Road and said the upgrade was a "success for people power".

"I went through that crossing twice a day and witnessed a lot of accidents ? it was usual to hear the sirens heading towards that corner," he said.

"We campaigned and lobbied everyone to get it fixed from [Bowman MP] Andrew Laming to the old Redlands MP, John English and the new Redlands MP, Peter Dowling, it was only ever going to get worse as more people move here."

Greg Bell, of Fox and Bell, said they had provided $2.1million towards the upgrade ? significantly more than their required contribution ? because it enabled the State Government to fast track an upgrade not planned for another 10 years.

"We knew upgrading this intersection was not only of paramount importance to the community, but vital to the safety of increasing traffic in the area," he said.

"We're very happy to have worked with Main Roads to secure this fast-tracked timetable and we commend the construction team from BMD who have also donea great job on the intersection."

Main Roads Minister Craig Wallace said the government's $2.5million funding would improve safety for motorists, pedestrians and cyclists.

"The intersection upgrade incorporates a number of wildlife initiatives including a fauna underpass and the installation of fauna exclusion fencing along both sides of Cleveland-Redland Bay Road."

The upgrade is expected to be completed in two to four weeks.