SNCF engineers have been using mathematical models for many years to simulate the dynamic behavior of railways. These models have not been able to take into account large portions of the track have ...

Add Yahoo as a preferred source to see more of our stories on Google. By the time you've laid and wired your track and installed your train and turnout control system, it's easy to let construction of ...

The combined effects of cyclic train loading, track irregularities, and the longitudinal non-uniformity of ballasted tracks induce uneven ballast settlement. Concurrently, the deterioration of dynamic ...

Those Stones Have a Name: Ballast The crushed stone found under many railroad tracks is called ballast. It forms the bed that ...