The axle track in automobile

Automobile

An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

s and other wheel

Wheel

A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

ed vehicle

Vehicle

A vehicle is a device that is designed or used to transport people or cargo. Most often vehicles are manufactured, such as bicycles, cars, motorcycles, trains, ships, boats, and aircraft....

s which have two or more wheels on an axle

Axle

An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

, is the distance between the centreline of two roadwheels on the same axle, each on the other side of the vehicle. In a case of the axle with dual wheels, the centerline in the middle of the dual wheel is used for the axle track specification.

In a car, or any vehicle, with two axles, this will be expressed as "front track" and "rear track".

However the front wheels and/or rear wheels on either side of a vehicle do not necessarely have to be mounted on the same axle for the distance that they are apart to be called the "track".

Rail

In the case of a rail wheelset the "track" is called "wheel gauge" and is measured from wheel flange reference line

Flange

A flange is an external or internal ridge, or rim , for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel...

 to wheel flange reference line.

See also

• Continuous track
• Track (automobile)
  Track (automobile)
  The Track of a road vehicle is the distance at which both the front and rear wheels are spaced apart from each other on the axle....
  
  
• Track gauge - determines the distance between the reference lines of the wheel
  Wheel
  A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...
  
  s on a wheelset of any rail car
  Rail car
  A rail car can be:* Railcar, a type of self-propelled passenger-carrying railway vehicle.* Railroad car, another type of railway vehicle, pulled by a locomotive....
  
   or tram
  Tram
  A tram is a passenger rail vehicle which runs on tracks along public urban streets and also sometimes on separate rights of way. It may also run between cities and/or towns , and/or partially grade separated even in the cities...
  
  .
• Wheelbase
  Wheelbase
  In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.- Road :In automobiles, the wheelbase is the horizontal distance between the center of the front wheel and the center of the rear wheel...
  
  - the distance between the front and rear axles