Abstract: Systems, apparatus, articles of manufacture, and methods to detect and respond to drive belt failures in vertically translating doors are disclosed. An example apparatus comprising: a bracket mountable adjacent to a drive belt of a vertically translating door, and a roller to be coupled to the bracket in a position to be in contact with the drive belt. The roller pivots about a first axis relative to the bracket. The roller rotates about a second axis relative to the bracket as the drive belt moves against the roller. The example apparatus further includes a sensor to sense movement of the roller about the first axis in response to a loss of tension in the drive belt.