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Trolleybus, or trolley, an electric bus drawing power from overhead wires using trolley poles Trolleytruck, a trolleybus-like vehicle used for carrying cargo; Tourist trolley, a rubber-tired bus designed to resemble an old-style streetcar or tram; Trolley (horse-drawn), a goods vehicle with four wheels of equal size mounted underneath it
Rumpler Tropfenwagen (1921), first aerodynamic "teardrop" car to be designed and serially produced (about 100 units built) Persu car (1922–1923), designed by Romanian engineer Aurel Persu, improved on the Tropfenwagen by placing the wheels inside the car body; Stout Scarab (1932–1935, 1946), US; Schlörwagen (1939), German prototype, never ...
Modern cars do not use pure Ackermann steering, partly because it ignores important dynamic and compliant effects, but the principle is sound for low-speed maneuvers. Some racing cars use reverse Ackermann geometry to compensate for the large difference in slip angle between the inner and outer front tires while cornering at high speed. The use ...
This both improves drive-wheel traction and reduces the tendency for the undriven wheels to dig in. In addition, the driving and steering requirements are split between front and rear- as with FR vehicles- making it less likely for either to lose traction. Many dune buggies successfully use a Volkswagen beetle as the donor car for this reason ...
Solaris Urbino 18 in Warsaw, Poland (2018). First example of the articulated bus appeared in Milan in 1937.In 1938, Twin Coach built an articulated bus for the city of Baltimore; this bus, which had four axles on a 47 ft (14.33 m) long body, was only articulated in the vertical direction to accommodate steep grades. 15 examples of the "Super Twin" were built in 1948, but it was not developed ...
Wheels with Asanti 28 in (710 mm) rims on a police Hummer H2 car. The wheel size is the size designation of a wheel given by its diameter, width, and offset. The diameter of the wheel is the diameter of the cylindrical surface on which the tire bead rides. The width is the inside distance between the bead seat faces.
Dynamic brakes slowed the "Air" cars to 3 mph (4.8 km/h) at which point a lock-out relay allowed automatic application of air-applied friction brakes against each of the eight wheels. On All-Electric cars the dynamics were effective to 0.75 mph (1.21 km/h) where the lockout relay then allowed a spring-applied friction brake to engage a drum on ...
Rail vehicle wheels are usually mounted on a solid axle, so they turn at the same speed.When a vehicle turns the outer wheel has to travel further than the inner wheel. On a road vehicle, this is usually achieved by allowing the wheels to move independently, and fixing the front wheels in an arrangement known as Ackermann steering geometry.