What is a dropped kerb?
A dropped kerb is a lowered section of kerb and strengthened footway that allows a vehicle to cross the pavement legally between the road and a driveway.
The footway is public land. Driving over an unaltered kerb, or laying your own crossing without consent, is an offence and can result in reinstatement charges. The crossing must also be built to withstand vehicle loading, which is why the council specifies the construction.

