Derailing
Derailing is when a rail vehicle falls off its tracks. In most cases derailment occurs from taking a corner too fast, but can also come from collisions. Apart from causing small wheel damage, derailments can indirectly inflict catastrophic damage by hurling a whole train off a cliff, making it collide with other trains, buildings, etc.
When a vehicle takes a corner too fast, flanges on its wheels start making contact with the rails. This makes a distinct high-pitched screeching sound and can warn the driver to slow down before it’s too late.
To maintain safe speeds, follow the speed limit signs.
It is possible to rerail vehicles using a comms radio. Cost of rerailing depends on distance between a derailed vehicle and destination track, so careful choosing of the rerailing spot is advised. In certain conditions it is possible to drive derailed motorized rail vehicles on land, and bring them closer to the tracks before rerailing, to reduce the cost.