Modern passenger and commercial vehicles share many of the same safety systems. Advanced Cruise Control, Anti-lock Brakes and Electronic Stability Control have all been shown to be an effective means of improving safety on both classes of vehicles. Dynamic Brake Support (DBS) is a system which has been implemented successfully on passenger cars but no record of implementation on heavy vehicles has been found. This is largely due to the belief that commercial vehicle drivers, as professionals, apply the brakes more effectively than passenger car drivers, and therefore do not need this system.
This document presents a multi-point study of the applicability of DBS to commercial vehicles. Beginning with analyzing commercial vehicle driver braking behavior to show that commercial vehicle driver braking behavior is fundamentally similar to passenger car driver behavior. Therefore, systems that assist passenger car drivers should also assist commercial vehicle drivers. Next, a revised method of braking behavior analysis is proposed to better characterize this behavior and model it stochastically.
Based on data indicating that this system could be effective, commercial vehicle driver braking behavior was evaluated to show that braking behavior in emergency situations could be reliably distinguished from behavior in non-emergency situations. This is important in that it allows the system to act only in situations in which it is necessary. Lastly a prototype DBS system is developed and is shown to be effective at reducing vehicle stopping distance and collision velocity in situations in which the vehicle cannot stop.