1 ptsPTOfficial number: 7105
What may cause low edges of the driving wheels?
Explanation
Correct answer: The wheels falling off the trackway.
The flange of a running wheel is a crucial element that guides a rail vehicle on the track. Its main function is to prevent the wheel from leaving the rail, especially on curves and at points. When the flange becomes too low as a result of wear, it is unable to effectively keep the wheel on the track, which risks the wheel coming off and causing the vehicle to derail.