casting shadow christian christianity community cross double cross faith religion religious shadow symbol wood wooden buildings bus city colored colorful coloring colors coloured colourful colouring colours covered walkways cross-roads double-decker bus Hong Kong over-pass pedestrian walkways pedestrian-overpass pedestrians road roads taxi traffic transport transportation turning vehicles advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black care careful caution communicating communication concern crossing danger dangerous double-lines information informing island lookout observant reflective refuge risk risks risky road-sign safety security share sharing sign signs small-traffic-island traffic-flow traffic-island walk walkers walking warning warning-sign watch watch-out yellow church god pray sky steeple