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Aw–Rascle–Zhang model
The Aw–Rascle–Zhang (ARZ) model is a second-order macroscopic traffic flow model describing vehicle density and velocity, proposed by Aw and Rascle in 2000 and independently by Zhang in 2002.
AWTF-80 SC
The AWTF-80 SC, also sold as the TF-80SC or TF-81SC, is a six-speed automatic transmission built by Aisin AW for transverse-engine cars, used by Volvo, Peugeot, Ford, and other automakers from the mid-2000s.
Axle
An axle is a central shaft on which a wheel or pair of wheels turns, and in vehicles it carries the vehicle's weight and transmits torque to the wheels.
B-screw
The B-screw, also called the B-tension screw, is an adjustment screw on a bicycle rear derailleur that sets the chain gap between the upper pulley and cassette cogs.
B-segment
The B-segment, also called supermini, is the European car class for small cars between city cars and compact family cars, like the Renault Clio and Ford Fiesta.
Baby transport
Baby transport, also called baby transportation, covers the devices and practices for moving infants and young children, from carriages and strollers to car seats and wearable carriers.
Back protector (motorcycle)
A motorcycle back protector is impact armor worn in a jacket or harness, certified under EN 1621-2 in Levels 1 and 2 to limit force reaching a rider's spine.
Backup camera
A backup camera, also called a rearview camera, is a rear-facing camera showing the driver the area behind a vehicle, required on new US light vehicles since 2018.
Baedal Minjok
Baedal Minjok (배달의민족), commonly shortened to Baemin, is South Korea's largest food delivery app, launched in 2010 and operated by Woowa Brothers under Germany's Delivery Hero.
BAIC Group (北京汽车集团有限公司)
BAIC Group, also known as Beijing Automotive Group Co., Ltd., is a Chinese state-owned automobile manufacturer headquartered in Beijing with roots in the 1958 Beijing Automobile Factory.
Baidu Apollo Go
Apollo Go (萝卜快跑) is Baidu's autonomous ride-hailing service, offering fully driverless trips to paying passengers in China, the Middle East, and testing in Europe since 2021.
Baja Bug
A Baja Bug, also called a Baja Beetle, is a Volkswagen Beetle modified for off-road desert use, a style that arose in California in the late 1960s.
Bajaj Chetak (बजाज चेतक)
The Bajaj Chetak (बजाज चेतक) is an Indian scooter nameplate from Bajaj Auto, sold as a petrol scooter from 1972 to 2005 and relaunched in 2020 as an electric scooter.
Bajaj Pulsar
The Bajaj Pulsar is a line of sports motorcycles made by Bajaj Auto of Pune, India, launched in November 2001 in 150 cc and 180 cc versions.
Balance bike
A balance bike is a children's bicycle without pedals, pushed along by the rider's feet, that teaches young children the balance and steering needed for a pedal bike.
Baldwin Street
Baldwin Street, in North East Valley, Dunedin, New Zealand, is recognized by Guinness World Records as the world's steepest street, with a maximum gradient of 35 percent.
Ball joint
A ball joint, or spherical joint, is an automotive bearing connecting a control arm or steering link to the steering knuckle, allowing suspension motion and steering simultaneously.
Baltimore–Washington Parkway
The Baltimore–Washington Parkway (MD 295) is a 29-mile limited-access highway connecting Baltimore, Maryland, with Washington, D.C., opened in 1954 and partly managed by the National Park Service.
Band brake
A band brake is a friction brake in which a flexible band wraps around a rotating drum and is tightened to slow it, common on Japanese utility bicycles.
Bangladesh Road Transport Authority
The Bangladesh Road Transport Authority, known as BRTA, is a statutory government body established in 1987 and headquartered in Dhaka that issues driving licenses and registers vehicles in Bangladesh.
Bar-end shifter
A bar-end shifter is a bicycle gear lever mounted inside the open end of a drop handlebar, controlling the derailleurs; the type is closely associated with SunTour's 1972 Bar-Con.
Barnacle (parking)
The Barnacle is a parking enforcement device that suction-cups across a windshield until fines are paid, developed by Kevin Dougherty and first trialed in 2016.
Basic RiderCourse
The Basic RiderCourse (BRC) is the entry-level learn-to-ride motorcycle curriculum of the Motorcycle Safety Foundation, released in 2001. In most states its completion waives the riding test.
Basic Safety Message
The Basic Safety Message is a standardized V2V message defined in SAE J2735 that vehicles broadcast 10 times per second to describe position, speed, and braking.
Battery electric vehicle
A battery electric vehicle (BEV), or battery electric car, is a road vehicle with no internal combustion engine, powered by an electric motor drawing energy from an on-board traction battery.
Beartooth Highway
Beartooth Highway, also known as Beartooth Scenic Byway, is the section of U.S. Highway 212 connecting Red Lodge and Cooke City, Montana, near Yellowstone's northeast entrance.
Bedford Vehicles
Bedford Vehicles, also known as Bedford trucks, was a British commercial vehicle brand of Vauxhall Motors produced from 1931 until 1986, with over 3.5 million built.
Beira Corridor
The Beira Corridor is a road and rail trade route in southeastern Africa, linking landlocked Zimbabwe, Zambia, Malawi, and DR Congo to the Port of Beira in Mozambique.
BelAZ
BelAZ (БелАЗ) is a Belarusian mining dump truck manufacturer in Zhodino, founded in 1948, maker of the 450-tonne BelAZ-75710, the world's largest series-production haul truck.
Belgian motorcycle Grand Prix
The Belgian motorcycle Grand Prix was a round of the FIM Road Racing World Championship at Spa-Francorchamps from 1949 to 1990, producing the fastest Grand Prix race in history in 1977.