The city council wants to extend the current route on the A38 from Selly Oak to Longbridge, creating a 鈥榗onnected corridor鈥 from central Birmingham.
The council hopes the project will cut dependency on cars and increase active travel while providing a safer environment for pedestrians and cyclists.
It said the proposal would support Birmingham鈥檚 commitment to becoming a carbon-neutral city by 2030.
Martin Price, co-chair of campaign group Better Streets for Birmingham, said they were 鈥渋ncredibly pleased鈥 to see the proposals being brought forward.
鈥淭hey will bring meaningful improvements to all users of the Bristol Road 鈥 whether they鈥檙e cycling to school, work or the park, walking to the shops, crossing the road to catch the bus, or driving to one of our many park-and-rides,鈥 he said.
鈥淭his scheme, along with cross-city bus proposals, will enable many more reliable and safe journeys along the A38.
鈥淭his is in stark contrast to today鈥檚 provision where people walking have to share the pavement with cyclists, where cyclists are sometimes crammed into a corner of the lane, and where buses lack journey time reliability.鈥
Mr Price said redesigning Birmingham’s streets was 鈥渙ne powerful way鈥 the council could address the city鈥檚 road safety emergency.
鈥淲e encourage everyone to have a look at the proposals,鈥 he said. 鈥淲e look forward to submitting our formal response over the coming weeks.鈥
A public consultation on the proposals can be found here, along with details of drop-in sessions.
鈥淔ollowing the consultation period, we will review all responses and make any necessary changes to the plans,鈥 the council said.
鈥淲e will then develop detailed final designs for construction.鈥