These days they are make pools without the parameter rim kerb. Any bicycle or stroller with baby or wheelchair can also landed inside, there is nothing physically barrier the pool any more. Nothing physically mark the perimeter to indicate the presence of a pool.
When the surrounding are dark and all surface wet, the driver who are unfamiliar with the place will see only a flat area covered with water, just like Lui Tuck Yew's ponding roads, but except there is an invisible pool below. This is a booby trap KNNCCB. It is common these days to have ponding roads and drive ways, no one will suspect there is pool there below the surface of water.
Unless there is very good lighting or some other signs or indications. A pool with the surrounding covered with heavy rain water will look like a wet courtyard. You try to drive through then Jia Lat, the driver and passengers can fucking die drown if can not swim.
CCB deadly design.