In this paper an imaging system for bus traffic conflict investigation is presented. The system employs geo-referenced stereo sequences and tracking procedure to provide much greater information regarding pre-crash and crash events than what is currently available. The exploitation of the traffic conflict technique potentiality as a surrogate safety measure could constitute an effective tool in...

Complex integrated systems contain more and more on-chip components which exchange data and access memories via buses. To consider parasitic effects on bus structures during the early design phase appropriate models and wiring methods must be available. A RC-Pi model is proposed to model the load of a bus driver cell that also considers capacitive coupling between the signal lines. On the basis...

Speed profiles for motor vehicles on urban streets are influenced not only by the street design and traffic performance, events such as interactions with pedestrians and cyclists, buses, on-street parking, exits from minor roads etc. (called “side-friction events”) also affect driver behaviour. A bottom-up research methodology was developed and applied including a wide range of stationary and m...

Long driving hours have a potential of causing fatigue, which is known as a contributing factor for collisions. This paper examines the influence of bus operator driving hours on the occurrence of preventable collisions by employing data from incident reports and operator schedules to evaluate the correlation between driving hours and operator involvement in collisions. Several methods of analy...

This paper presents a technique for saving power dissipation in large datapaths by reducing unnecessary switching activity on buses. The focus of the technique is on achieving effective power savings with minimal overhead. When a bus is not going to be used in a datapath, it is held in a quiescent state by stopping the propagation of switching activity through the module(s) driving the bus. The...

Public transport is a potentially important part of independent living for older people, but they are over-represented in non-collision bus injuries. This paper reports on a computational modelling approach to addressing this problem: the Madymo human model validated for simulating passive, seated vehicle occupants was adapted to simulate a standing passenger in an accelerating bus. The force/d...

On September 16, 2013, the North Carolina Division of Public Health was notified of an elemental (metallic and liquid) mercury spill on a school bus. An elementary student boarded the bus with approximately 1 pound (454 g) of elemental mercury contained in a film canister, which the student had taken from an adult relative who had found it in a neighbor's shed. The canister was handled by sever...