Rose's Cafe stood at the junction of Stonehouse Lane and Barnes Hill in California. Having passed through Harborne the number 12 bus would continue along Stonehouse Lane (to the right of the picture) to Bartley Green. Barnes Hill, the left fork at Rose's Cafe, leads to Weoley Castle. This was served by the number 22 bus, though I think that back in the 50s that service was called route 20.