appropriate-behavior appropriate-behaviour canine clean clean-up cleanliness communicating communication control controlled denial denied dog doggy-do dogs-prohibited droppings exception excrement excreta hygiene informing lead leash mess messy not-allowed not-permitted pets pickup poo prepared prohibited prohibition regulations responsible rules sanitation sign warning waste access armed authorities authority availability available badges barriers cars deployment equipment flashing-lights law law-&-order lights motor-bikes National-Day on-duty on-the-job order patrols police police-vehicles power presence security Singapore symbols traffic traffic-control uniforms vehicles weapons advice alert allowed announcement black care careful consideration directions dogs guidelines information pedestrians permission-granted purple risk risks safety signs track walk walkers walking welcome white cables connect domestic home houses junction phone pole tangle telephone wires wooden be-careful beware caution concern crossing danger dangerous listen Look looking lookout observant rails railway railway-crossing red road trains warning-sign watch watch-out accessibility allocated allocation approved arrow blue conditional conditions directing direction directional disability disabled fee-free free handicapped indication indicator no-fee parking symbol wheelchair word