At one point I was in charge of maintaining the safety of a fleet of large, unwieldy vehicles. I thought that putting backing alarms on the trucks would increase everyone's safety during maneuvering in the parking lot, but I hated that darn beeping!
I considered having a simple switch to turn the alarms off, but I was pretty sure that no one would ever remember to turn them back on.
To solve this problem, I created a system where (as usual) the alarm begins sounding when the vehicle is placed into reverse, but there is a disable button installed on the dashboard. The operator can press the button to silence the alarm; however, the system will reset once the vehicle is taken out of reverse, so that the alarm will sound again the next time the vehicle is shifted into reverse.
The system requires a bit more work to install than a standard backing alarm, but it's a small price to pay for maintaining pedestrian safety, my sanity, and the gratitude of our neighbors.