Wheel chock

As scotches is called on the railroad a device provided with the parked rail vehicles, eg for loading or unloading freight cars, can be secured against accidental elopement. Commonly used today scotches with a hemmschuhähnlichen appearance that can be tightened and finished next to a wheel of the vehicle to one of the two rails. An older form of Radvorlegers are two connected with an iron bar chocks (so-called double scotches ) that are placed on both rails. Under certain conditions, may also chocks - usually only temporarily - to secure parked vehicles will be used.