A driving simulator evaluation of potential speed reductions using two innovative designs for signalised urban intersections.

Intersections are typically associated with a higher level of crash risk than other types of facilities on the road network. Standard cross-road intersections are particularly hazardous because by their very design, drivers may travel through at speeds that are incompatible with human biomechanical tolerance should a crash occur. Further, drivers are exposed to dangerous conflict angles, which are likely to result in serious injury.

An exploration of alternative intersection designs in the context of Safe System.

Fatal and serious injury crashes persist at intersections despite current efforts to address this. Little research specifically investigates the role played by existing intersection design in perpetuating serious intersection crash outcomes despite an increasing move to incorporate Safe System design on to roads. This paper identifies design principles deemed important to align intersection design with Safe System approaches, including exploring the impact of speed and angle on overall kinetic energy of a crash.

Raised crosswalks on entrance to the roundabout-a case study on effectiveness of treatment on pedestrian safety and convenience.

Objective: A common concern in the use of a roundabout is providing adequately for the pedestrian. This unique roundabout layout, which introduces raised crosswalks directly at the roundabout entrance, as opposed to at a car length back, aims at improving safety and convenience for pedestrians at roundabouts.

Methods: A preliminary evaluation of the layout was undertaken to establish its effectiveness in meeting study objectives.