A cover for attachment to a header of a door system. The cover may have a motor compartment, a pulley compartment, and a first window. The motor compartment may be configured to at least partially enclose a motor and the pulley compartment may be configured to at least partially enclose a pulley, where the motor is operably attached to the pulley to drive a drive member. The first window may be configured to receive a portion of the drive member extending through an exterior wall of the cover.

A gate safety system for preventing collisions between a vehicle and a gate is provided, the system having a gate module with a vehicle module, a gate antenna unit and a gate processing unit. The gate processing unit is adapted for defining a first gate warning zone and for determining whether a vehicle module is present within the first gate warning zone. The vehicle module includes a vehicle antenna unit and a vehicle processing unit adapted for defining at least one first vehicle warning zone for determining whether the gate module is present within the vehicle warning zone. A lock safety system, two methods for operating the gate safety system and the lock safety system, and two computer programs are also provided.