Truck bypass

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A labeled aerial photograph of the Newhall Pass Interchange showing significant geographic separation between the standard freeway route (blue and green) and the dedicated truck bypass (red). Newhall Pass Interchange.png
A labeled aerial photograph of the Newhall Pass Interchange showing significant geographic separation between the standard freeway route (blue and green) and the dedicated truck bypass (red).

A truck bypass is a roadway that provides physical separation of trucks from passenger vehicles at a freeway interchange in order to eliminate weaving between passenger cars traveling at higher speeds and trucks traveling at lower speeds. [1] Typically a truck bypass exits the main freeway some distance before the interchange it is intended to bypass; trucks are usually required to use the bypass, while passenger cars may choose between the bypass and the main traffic lanes. A truck bypass may take the form of a dedicated roadway or a collector/distributor road. The bypass allows vehicles traveling on it to exit the interchange in the same possible directions as the main line of traffic, and then merges with the respective freeway at some point past the interchange.

Truck freight motor vehicle

A truck or lorry is a motor vehicle designed to transport cargo. Trucks vary greatly in size, power, and configuration; smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful and may be configured to be mounted with specialized equipment, such as in the case of refuse trucks, fire trucks, concrete mixers, and suction excavators. Strictly speaking, a commercial vehicle without a tractor or other articulation is a "straight truck" while one designed specifically to pull a trailer is not a truck but a "tractor".

Interchange (road) road junction, typically using grade separation

In the field of road transport, an interchange is a road junction that uses grade separation, and typically one or more ramps, to permit traffic on at least one highway to pass through the junction without interruption from other crossing traffic streams. It differs from a standard intersection, where roads cross at grade. Interchanges are almost always used when at least one road is a controlled-access highway or a limited-access divided highway (expressway), though they are sometimes used at junctions between surface streets.

Weaving technology for the production of textiles

Weaving is a method of textile production in which two distinct sets of yarns or threads are interlaced at right angles to form a fabric or cloth. Other methods are knitting, crocheting, felting, and braiding or plaiting. The longitudinal threads are called the warp and the lateral threads are the weft or filling. The method in which these threads are inter-woven affects the characteristics of the cloth. Cloth is usually woven on a loom, a device that holds the warp threads in place while filling threads are woven through them. A fabric band which meets this definition of cloth can also be made using other methods, including tablet weaving, back strap loom, or other techniques without looms.

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Truck bypass should not be confused with truck lane ; a truck lane is a lane dedicated for trucks on steep inclines that is not physically separated from the main highway.

Notable Examples

United States
El Toro Y interchange in California

The El Toro "Y" is a freeway interchange in southern Orange County, California where the Santa Ana Freeway, Interstate 5 (I-5), and the San Diego Freeway, the I-405 merge. South of that point, it retains the name "San Diego Freeway" but with the highway designation "I-5." Located in south Orange County where the cities of Lake Forest, Laguna Hills, and Irvine converge, the interchange was named after the city and the now closed Marine Corps Air Station El Toro, located northeast of the interchange.

The New Jersey Turnpike (NJTP), known colloquially as "the Turnpike", is a system of controlled-access highways in New Jersey, maintained by the New Jersey Turnpike Authority (NJTA). The 117.20-mile (188.62 km) mainline's southern terminus is at the interchange with U.S. Route 130 (US 130) and Route 49, where the split of Interstate 295 (I-295) and US 40 occurs, near the border of Pennsville and Carneys Point townships in Salem County, one mile (1.6 km) east of the Delaware Memorial Bridge. Its northern terminus is at US 46 in Ridgefield Park, Bergen County. Construction of the mainline from concept to completion took 23 months, from 1950 to 1952. It was officially opened to traffic in November 1951, between its southern terminus and exit 10.

Interstate 5 (I-5) is a major north–south route of the Interstate Highway System in the United States, stretching from the Mexican border at the San Ysidro crossing to the Canadian border near Blaine, Washington. From San Ysidro, the segment of I-5 in California runs north across the length of the state, and crosses into Oregon south of the Medford-Ashland metropolitan area. It is the more important and most-used of the two major north–south routes on the Pacific Coast, the other being U.S. Route 101 (US 101), which is primarily coastal.

See also

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Traffic on roads consists of road users including pedestrians, ridden or herded animals, vehicles, streetcars, buses and other conveyances, either singly or together, while using the public way for purposes of travel. Traffic laws are the laws which govern traffic and regulate vehicles, while rules of the road are both the laws and the informal rules that may have developed over time to facilitate the orderly and timely flow of traffic.

Interstate 27 (I-27) is an Interstate Highway, entirely in the U.S. state of Texas, running north from Lubbock to Interstate 40 in Amarillo. These two cities are the only control cities on I-27; other cities and towns served by I-27 include New Deal, Abernathy, Hale Center, Plainview, Kress, Tulia, Happy, and Canyon. In Amarillo, I-27 is commonly known as the Canyon Expressway, although it is also called Canyon Drive on its access roads. I-27 was officially designated the Marshall Formby Memorial Highway after former attorney and Texas State Senator Marshall Formby in 2005. The entire length of I-27 replaced U.S. Route 87 for through traffic.

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New Jersey Route 133 highway in New Jersey

Route 133 is a short state freeway located entirely in East Windsor Township, Mercer County, New Jersey in the United States. The route runs as a 4.42-mile-long (7.11 km) four-lane bypass of Hightstown from County Route 571 (CR 571) at Windsor Center Drive to the New Jersey Turnpike / Interstate 95 (I-95) at exit 8. Originally, Route 133 did not have any direct connections to any other limited access roads until a new Turnpike interchange opened in January 2013.

Frontage road Type of road

A frontage road is a local road running parallel to a higher-speed, limited-access road. A frontage road is often used to provide access to private driveways, shops, houses, industries or farms. Where parallel high-speed roads are provided as part of a major highway, these are also known as local-express lanes.

Interstate 285 (I-285) is an Interstate Highway loop encircling Atlanta, Georgia, for 63.98 miles (102.97 km). It connects the three major interstate highways to Atlanta: I-20, I-75 and I-85. Colloquially referred to as The Perimeter, it also carries unsigned State Route 407 (SR 407), and is signed as Atlanta Bypass on I-75/I-85.

Shoulder (road) reserve lane by the verge of a roadway

A shoulder, or hard shoulder is an emergency stopping lane by the verge of a road or motorway, on the right in countries which drive on the right, or on the left side in India, Japan, the UK, Australia, and other left-side driving countries. Many wider US and Swedish freeways have shoulders on both sides of each directional carriageway, in the median as well as at the outer edges of the road, for additional safety. Shoulders are not intended for use by through traffic, although there are exceptions.

Lane part of the carriageway within a road designated to be used by a single line of vehicles

In the context of traffic control, a lane is part of a roadway (carriageway) that is designated to be used by a single line of vehicles, to control and guide drivers and reduce traffic conflicts. Most public roads (highways) have at least two lanes, one for traffic in each direction, separated by lane markings. On multilane roadways and busier two-lane roads, lanes are designated with road surface markings. Major highways often have two multi-lane roadways separated by a median.

South Eastern Freeway freeway in South Australia

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Passing lane

A passing lane or overtaking lane (English) is a lane on a multi-lane highway or motorway closest to the median of the road. In some countries, lanes are described as being on the 'inside' or the 'outside' of a road, and the location of the passing lanes will vary.

Controlled-access highway Highway designed exclusively for high-speed vehicular traffic, with all traffic flow and ingress/egress regulated

A controlled-access highway is a type of highway which has been designed for high-speed vehicular traffic, with all traffic flow ingress- and egress-regulated. Common English terms are freeway, motorway and expressway. Other similar terms include Interstate and thruway and parkway. Some of these may be limited-access highways, although this term can also refer to a class of highway with somewhat less isolation from other traffic.

Interstate 95 (I-95) in Maryland is a major highway that runs 109.01 miles (175.43 km) diagonally from northeast to southwest, from Maryland's border with Delaware, to the Woodrow Wilson Bridge, entering the District of Columbia and reaching Virginia. The route is one of the most traveled Interstate Highways in Maryland, especially between Baltimore and Washington, D.C., despite alternate routes along the corridor, such as the Baltimore-Washington Parkway, U.S. Route 1, and US 29. Portions of the highway are tolled.

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Two-lane expressway Article collection to the topic "two-lane expressways" (Limited-access road of a specific country)

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Newhall Pass interchange interchange in California

The Newhall Pass Interchange is a highway interchange at Newhall Pass, north of Sylmar in Southern California, United States. It connects Interstate 5 with State Route 14. It is officially named in the memory of Los Angeles Police officer Clarence Wayne Dean, who was killed when the interchange collapsed during the 1994 Northridge earthquake.

Speed limits in the United States by jurisdiction

Speed limits in the United States vary depending on jurisdiction. Rural freeway speed limits of 75 to 80 mph are common in the Western United States, while such highways are typically posted at 65 to 70 mph in the Eastern United States. States may also set separate speed limits for trucks and night travel along with minimum speed limits. The highest speed limit in the country is 85 mph (140 km/h), which is posted on a single stretch of tollway in rural Texas. The lowest maximum speed limit in the country is 30 miles per hour (48 km/h) in American Samoa.

Glossary of road transport terms Wikimedia list article

Terminology related to road transport—the transport of passengers or goods on paved routes between places—is diverse, with variation between dialects of English. There may also be regional differences within a single country, and some terms differ based on the side of the road traffic drives on. This glossary is an alphabetical listing of road transport terms.

Managed lane

A managed lane is a type of highway lane that is operated with a management scheme, such as lane use restrictions or variable tolling, to optimize traffic flow, vehicle throughput, or both. Definitions and goals vary among transport agencies, but managed lanes are generally implemented to achieve an improved operational condition on a highway, such as improving traffic speed and throughput, reducing air pollution, and improving safety. Types of managed lanes include High-occupancy vehicle (HOV) lanes, High-occupancy toll lanes, express toll lanes, reversible lanes, and bus lanes. Most managed lane facilities are located in the United States, although HOV and bus lanes can be found in many other countries; outside of the US, many countries use active traffic management that manage all lanes of a highway.

References

  1. San Bernardino Associated Governments, Interstate 15/Interstate 215: Devore Interchange Reconstruction, accessed February 2008