Final answer:
In the event that a vehicle gets stuck on railroad tracks, the immediate action is to get out of the vehicle for personal safety, before taking any further steps.
Step-by-step explanation:
If your vehicle gets stuck on railroad tracks, the very first step you should take is to get out of the vehicle immediately. This is a matter of safety, to ensure that you are not in the vehicle if a train comes along the tracks. It is important to quickly evaluate whether there is a train approaching. If there is no train in sight, you can then proceed to call the posted emergency telephone number for assistance. In the meantime, activate your four-way flashers if it is safe to do so to alert other road users of the stalled vehicle. However, the primary concern is your personal safety, so exiting the vehicle should always be the first action you take in such a situation.