
The first problem is when the driver releases the hand brake and attempts to drive away but can't because one of the vehicle interlocks (i.e. guard bar) is still active. If the driver leaves the cab at this point to clear the active interlock without re applying the hand brake first, the unattended vehicle, if parked on an incline, has the potential to roll away as soon as the interlock is reset.
AntiMove is designed to maintain the hand brake "on" signal until the driver returns to the cab and passes the tag over the AntiMove keypad which in turn releases the vehicle brakes.
The second feature of AntiMove is a security feature which stops unauthorized movement of the vehicle when left unattended.
A typical situation is when the driver is making a delivery and is away from the vehicle cab with the keys in the ignition and the engine is running. In the situation AntiMove prevents the vehicle from being moved until the driver returns and passes the tag over the AntiMove keypad which again releases the vehicle brakes.