barrier block blocks city closed dumper dusseldorf flats lights lorru office roadwork roadworks town traffic traffic lights truck buildings road shops street fence ahead blockage blocked construction constructions cutout detour diversion isolated lamps platform roadsign roadsigns sign signs trailer turn works crossing junction lamp streetlamp bricks clear glass light perspective rippled transparent vertical wall illuminate night security stone frame graphic illusion illustration squares warp background empty fire-hazard grass grasses green hazard hazardous neglected plant pests problems property risky self-seeding shimmering shiny spring suburban block textures unattended undeveloped land unneighborly unneighbourly vacant vacant block vacant property vegetation weeds wild oats