access armed authorities authority availability available badges barriers cars communicating communication control deployment equipment flashing-lights law law-&-order lights motor-bikes National-Day on-duty on-the-job order patrols police police-vehicles power presence regulations responsible security Singapore symbols traffic traffic-control uniforms vehicles weapons competing competition competitors connected connections floor flooring floorspace fun games indoor-games indoors inside joined miniature miniature-cars miniature-racetrack model-cars model-vehicle-tracks models over plastic play race racing semi-circular setup space toy-cars toy-vehicles toys tracks train-tracks under underpass wood wood-stain wooden