Encountered and saw a few times in the carpark that the driver suddenly stopped and reverse park into the parking lot without giving any warning to the motorists behind them.
Please be considerate and switch on your hazard light before stopping and doing reverse parking, so that other motorists behind you will know of your intention and will stop at a distance for you to complete your parking.
It is also safer cos who knows the motorists behind you might just bang into you one day when you stopped suddenly.
