In railway collisions, passengers are thrown from their seats and translate long distances because they are not restrained by a seatbelt. This creates the possibility of serious injury caused by collision with interior components at high velocity. It is important, therefore that passengers’ behaviours are estimated. This study focuses on a passenger seated on longitudinal seating away from a bench‐end partition. They translated and then pitched over with its head leading any other physical part. Sled tests for imitating a situation where a passenger collides with the bench‐end partition were conducted. Then, numerical simulations for reproducing the sled tests were performed with MADYMO. The dummy’s behaviours of the numerical simulations, which are collision position and collision velocity, were almost equivalent to those of the sled tests. On the other hand, the head accelerations of the simulations were different from those of the sled tests greatly. Thus the joints of the dummy model’s neck were improved. The head accelerations of the simulations after the improvement almost corresponded with those of the sled tests.