Search Results

A linear mathematical model is developed for studying the directional response and yaw stability of many-axled, multi-articulated tanker trucks. Analytical results obtained from the model provide an understanding of (1) the factors leading to unstable lateral responses of double tankers when only the rear compartment of the rear (pup) trailer is loaded and (2) the likelihood of rollover of the pup trailer in obstacle-avoidance maneuvers on the highway. Rigidizing the connection at the pintle hook is found to improve the directional performance of the double tanker.

Physical prototypes of two forms of intelligent subsystems for increasing a truck driver’s ability to maintain stable operations with an articulated heavy-duty vehicle have been designed, constructed, and demonstrated. The two systems deal, respectively, with (1) quasi-steady-state rollover and (2) rearward amplification of lateral acceleration (especially in multi-articulated trailer combinations). Both forms of instability have been documented through prior research and both are known to influence the crash record. Results from testing show that both systems are viable from a technical point of view.