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Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. [1] When traffic demand is great enough that the interaction between vehicles slows the traffic stream, this results in ...
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 ...
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 ...
In 1998, plans for a railway expansion were implemented however only 5 km (3.1 mi) of the planned 73 km (45 mi) was actually built. As such, there exists a lack of an adequate non-road-based public transportation system. [3] This is made evident with the problem of overcrowding during peak hours, which is at 4:00pm to 5:00 pm.
The area to be constructed is the entire length from I-880 to SR 85. [97] The portion from I-880 and North First St opened in March 2012. Riverside County is recognized by the California Transportation Commission (CATC) as having a traffic congestion problem second only to Los Angeles. [98] SR 91 under construction.
Pothole. A deep pothole with a nearby patched area on New York City 's Second Avenue. A pothole is a pot-shaped depression in a road surface, [1] usually asphalt pavement, where traffic has removed broken pieces of the pavement. It is usually the result of water in the underlying soil structure and traffic passing over the affected area.
Macadam. An illustration of the first macadamized road in the United States between Boonsboro and Hagerstown in Maryland in 1823; in the foreground, workers are breaking stones "so as not to exceed 6 ounces (170 g) in weight or to pass a two-inch (5 cm) ring". Macadam is a type of road construction pioneered by Scottish engineer John Loudon ...
A-pillar blind spot. A blind spot in a vehicle or vehicle blind spot is an area around the vehicle that cannot be directly seen by the driver while at the controls, under existing circumstances. [1] In transport, driver visibility is the maximum distance at which the driver of a vehicle can see and identify prominent objects around the vehicle. [2]