Citation

Arroyo Contreras GM, Lozano Guzmán AA, Betanzo Quezada E, Romero JA. Int. J. Veh. Perform. 2016; 2(4): 353-373.

Copyright

(Copyright © 2016, Inderscience Publishers)

DOI

10.1504/IJVP.2016.10000720

PMID

unavailable

Abstract

According to road safety standards, the cargo must be secured to the carrying vehicle in such a way that it does not shift or fall, setting performance measures addressing specific acceleration levels that the cargo restraint system must withstand. For a braking manoeuvre, the mandatory acceleration level is 0.8 g. On the other hand, improved stopping distances are being demanded, involving accelerations on the order of 0.52 g. In this paper, a dynamic model is proposed to assess the braking performance of a cargo vehicle, as a function of the cargo securement method and pavement roughness.

RESULTS suggest that transient accelerations greater than 0.8 g can be attained during the braking manoeuvre, as a result of the cargo-vehicle decoupling, provoking that the braking forces be exerted on a diminished mass. A value of 1.1 g is recommended as a new mandatory braking acceleration level that the cargo securement method should withstand.


Keywords: cargo securement; vehicle braking; braking performance; pavement roughness; road safety; cargo-vehicle interaction; tiedowns; road safety standards; braking acceleration level; stopping distance; performance measures; dynamic modelling; braking forces.

Language: en