bikes motorbike Motorbikes motorcycle parking scooter motor motorcycles motors park parking lot parkplace scooters bike cycle Ducati motorcycling ride riding sundtech transportation biker bikers city move moving people rider Riders road transport urban brush clip clipped cut cutout isolated isolation out access-denied access-limited advice alert appropriate-behavior appropriate-behaviour ban banned be-careful beware bylaws communicating communication concern danger dangerous denied directions information informing law legal motorbikes-prohibited no-wheels not-allowed not-permitted pedestrian-care pedestrian-safety permission-denied prohibited prohibition prohibitions restricted restriction restrictions risk risks rules safety sign signs symbol warning warning-sign watch watch-out