Road transport safety has always been paid attention to by the production managers of enterprises. In this study, cloud model and analytic hierarchy process were applied long-tube trailer transport. The opinions 30 experts analyzed, from which 29 key parameters selected. study addressed relevance possibility automatic collection transmission obtain 12 core risk factors. macro-safety indicator s...

Articulated mobile robots consisting of a tractor and passively off-hooked trailers belong to a class of highly nonlinear, nonholonomic, structurally unstable, differentially nonflat, and underactuated dynamic systems. Due to the mentioned properties of their kinematics, motion control problems related to N-trailer robots (N-trailers) are non-trivial and challenging. Cascaded control strategy p...

Accident rates of heavy truck-tractors are modelled using log-linear methods. The accident data used are a census of truck-tractor involvements in Michigan from May 1987 to April 1988. Travel data used to calculate the rates were produced by a survey of truck-tractors in Michigan covering the same time period. Both the accident and travel data were limited to Michigan-registered tractors operat...

In this paper, a method integrating Q-learning algorithm and simulation technique is proposed to optimize the operation scheduling in container terminals. Firstly Q-learning algorithms for yard cranes and yard trailers are designed to obtain the optimal scheduling strategy of yard cranes and yard trailers. Then Q-learning is combined with simulation to develop an integrating scheduling model in...

Handling freight in a crossdocking terminal is labor-intensive, and therefore costly, because workers must unload, sort, and transfer a wide variety of freight from incoming to outgoing trailers. The eÆciency of workers depends, in large part, on how trailers are assigned to doors around the dock; that is, on its layout. A good layout reduces travel distances without creating congestion, but, u...

Optimal paths are in many ways interesting to motion planning. Not only they are obviously the most interesting ones with respect to the optimized criterion , but also they ooer a way of studying the topolog-ical aspects associated to the controllability of the system. Many works have been carried out successfully on the optimal paths for unicyle and carlike system. This paper aims to extend th...