access armed authorities authority availability available badges barriers cars communicating communication control deployment equipment flashing-lights law law-&-order lights motor-bikes National-Day on-duty on-the-job order patrols police police-vehicles power presence regulations responsible security Singapore symbols traffic traffic-control uniforms vehicles weapons drive germany Harz locomotive old quedlinburg rail Schmalspur station train transport travel vehicle 4x4 auto car cutout emergency four isolated jeep light machine red terrain atv silver suv 30 direction limit number road sign speed limit thirty village warning white 18 wheeler haul lorry rig semi shipping trailer transportation truck trucking trucks air force armored car armoured car army Camouflage military Portuguese texture war