beware danger drive groove rail railway road rut safety security sign street traffic train travel vehicle warning yellow auto car cutout driver isolated journey machine micra motor nissan transport wagen way cobble cobblestone dust ground moss old path pavement paver pebble pebbles rock sand stone texture walk Africa animal ban banned bumps camel circle desert prohibition red roadsign roadsigns signs wild arrow blue garage help left mechanic mechanics repair repairs sky tire tyre vulcanization wheel against letter mail mails many pictogram protest spam spammed stop asphalt barrel build building bulldozer construction lay machines pathed roller steam work direction guide guide-post lost mountains post show trail wood wooden barrier block blocks buildings city closed dumper dusseldorf fence flats lights office roadwork roadworks shops town cars crossing flat home house parked parking urban windows winter zebra