covid-19 lockdown cordon containment barricade panorama obstacle detour road barrier fence yellow biological hazard danger warning

access attention bar barricade barrier biohaz biohazard biological block blocked boundary car caution closed closeup concept containment controlling cordon covid19 cut cutout danger detailed detour driving equipment fence hazard highway isolated large marking obstacle out panorama panoramic preventive protective railing red redirect redirection reroute road roadsign safety sign signage signal signs stop street symbol traffic warning white yellow lockdown hazmat