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Road traffic control device. Road traffic control devices are markers, signs and signal devices used to inform, guide and control traffic, including pedestrians, motor vehicle drivers and bicyclists. These devices are usually placed adjacent, over or along the highways, roads, traffic facilities and other public areas that require traffic control .
Left-hand traffic ( LHT) and right-hand traffic ( RHT) are the practices, in bidirectional traffic, of keeping to the left side and to the right side of the road, respectively. They are fundamental to traffic flow, and are sometimes called the rule of the road. [ 1] The terms right- and left-hand drive refer to the position of the driver and ...
Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...
Traffic engineers refer to three "E's" when discussing traffic calming: engineering, (community) education, and (police) enforcement.Because neighborhood traffic management studies have shown that residents often contribute to the perceived speeding problem within their neighborhoods, instructions on traffic calming (for example in Hass-Klau et al., 1992 [4]) stress that the most effective ...
Raised pavement marker. The orange markers separate opposing traffic lanes. The blue marker denotes a fire hydrant on the left sidewalk. A raised pavement marker is a safety device used on roads. These devices are usually made with plastic, ceramic, thermoplastic paint, glass or occasionally metal, and come in a variety of shapes and colors.
Marking material is used to cover the markers or a portion of road surface. The color of the masking material is made to be similar to the color of the road surface. Some markings such removable preformed tapes are applied as a temporary marker removal measure. The most expensive method is resurfacing.
Road traffic safety. Vehicles experiencing a breakdown or an emergency can stop in the emergency lane; these lanes may themselves present risks to traffic. Road traffic safety refers to the methods and measures used to prevent road users from being killed or seriously injured. Typical road users include pedestrians, cyclists, motorists, vehicle ...
A diverging diamond interchange ( DDI ), also called a double crossover diamond interchange ( DCD ), [ 1][ 2] is a subset of diamond interchange in which the opposing directions of travel on the non- freeway road cross each other on either side of the interchange so that traffic crossing the freeway on the overpass or underpass is operating on ...