boom buildings cambodia cap changing-a-globe city-street-light clouds crane danger electricity heavy-duty height high hook light lighting mobile-crane open overhead public-utility risk risky sky steel-cables street-light telescopic-boom up-above wires wiring workman asphalt black bollards care careful caution changes changing circular cloud-formation concrete cones construction curb curbing curbs delineators edging fill footpath infrastructure mobile-lighting public-space red road-junction road-surface roads roadside roundabout sand slow-down slower speed-reduction street street-lighting surface surfaces surfacing T-junction temporary thoroughfare traffic traffic-cones traffic-flow uneven-surfaces warning witches-hats aid assist assistance color colors colour colours cool cooling disability disabled gardens green greenery handicap handicapped mobile mobility-aid motorised motorized mottled movement moving park path pond pool public relaxing shade shadows shady shrubbery sunlight support tree-lined trees undergrowth walkway wheelchair