Roadtek, I dont doubt that the benefits can be high, but these devices are not necessary if you have good training and strong management. If you have to increase the aquisition cost or running cost per hour by fitting these these devices its a poor comment on the whole company workers and management alike.

On a slightly different note having impact devices configured so that the truck shuts down immediately on impact is potentially very dangerous. What if the impact was caused by an accident trapping someone? cant move the lift to get the injured person out till you find the supervisor to reset the device, that system should be made illegal.