Speeding car spins out of control - GIF

[Frank S]

Actually I think the trucking companies are installing them as a defense against the ambulance chasing anti truck attorneys. and highway patrols.

[NeiljohnUK]

Actually I think the trucking companies are installing them as a defence against the ambulance chasing anti truck attorneys. and highway patrols.

Also good for tracking driver 'habits' that can cost them dear in fuel and wear, major bus operators in the UK adopted for those reasons along with the evidential protection provided if involved in a crash, they also use the evidence to dismiss drivers who abuse vehicles or are found to be dangerous.