The Street later turning into B28 is called '''Rheinlandstraße'''. You can try to
* stop cars at the crossing with ''Westbahnhofstraße''
* ask people at the gas petrol station where the ''Herrenberger Straße'' meets the Rheinlandstraße* stop cars at the bus stop about 150 meters west of this gas petrol station.
The latter worked very well for me on a sunny afternoon.