Data associated with over 9000 accidents involving large trucks and combination vehicles during a two-year period on freeways in the greater Los Angeles area are analyzed relative to collision factors, accident severity, and incident duration and lane closures. Relationships between type of collision and accident characteristics are explored using log-linear models. The results point to signifi...

In this research, Ride quality of a three-axle truck is investigated to understand its vibration specifications and influence of it on special load. The truck is Benz 2624, and the load is rather sensitive to vibrations. The system is considered for an off-road duty. Hence, the vehicle is modeled as a nineteen-degree of freedom system and its equations of motion are derived by employing Lagrang...

This report addresses an important crossdocking planning operation which is the scheduling of trucks at crossdocking terminals. The study focuses on the problem in a resource-constrained crossdock. The truck scheduling problem in this scenario decides on the succession of incoming and outgoing trucks at the dock doors of the crossdocking terminal, subject to the availability of the crossdock re...

This paper considers a truck scheduling problem in a multiple cross docks while there is temporary storage in front of the shipping docks. Receiving and shipping trucks can intermittently move in and out of the docks during the time intervals between their task execution, in which trucks can enter to any of the cross docks. Thus, a mixed-integer programming (MIP) model for multiple cross docks ...

Truck size and weight regulations have been a key instrument used to improve trucking productivity, safety, operational performance in Canada. In response these changes, bridge design codes undergo modifications envelop the potential range of trucks operation. A five-decade timeline is presented: (1) document how their live load models evolved, with focus on Manitoba-specific HSS-25 truck, (2) ...

Improving motor carrier and highway safety is a primary focus of many transportation agencies in Canada and the U.S. With the decreased building of new infrastructure, and the rapid growth of trucking activity in the two countries, it is important to develop innovative ways to improve highway safety as it relates to commercial vehicles. Due to the nature of trucking in the Canadian Prairie regi...

In this paper the potential of predictive control in a hybrid wheel loader is estimated using related research results as a basis. The application of hybrid technology to a wheel loader application is discussed and differences between on-road vehicles and wheel loaders are clarified. The main part of the related research has its focus on on-road vehicles where the usage patterns are more cohere...

Several X-ray crystal structures of the E. coli core clamp loader containing the five core (δ', δ, and three truncated γ) subunits have been determined, but they lack the ψ and χ subunits. We report the first solution structure of the complete seven-subunit clamp loader complex using small angle X-ray scattering. This structure not only provides information about the location of the χ and ψ sub...