Dock Door Protectors (Track Guards) Ask An Expert Request a Quote Request Service Or give us a call: 1-888-606-9415 Commonly known as Track Guards, Trak Guard, or Z-guards, dock door protectors are built to do what they say: Protect the door track and doors in your loading dock operation. The ideal environment for Track Guards is a high traffic area, as these are prone to collisions and damaged equipment which often results in the inability to close and lock your door. The goal of Track Guards is to minimize the need for costly repairs and, more importantly, avoid a security issue with a broken door. Your cost-reduction and safety goals can be met by using Track Guards. Track Guards come in both steel and high-impact plastic. Impact-A-Track is a model by APS Resource that has either a reflector embedded or red-green LED lighting that can be linked to a powered truck restraint to improve dock communication.