Final answer:
Generally, vehicles should not be parked within 50 feet of a railroad track, although local regulations may vary and should always be consulted.
Step-by-step explanation:
When considering rules about where to not park your vehicle, it's important to be aware of specific regulations concerning proximity to a railroad track. Although the reference provided does not specify an exact distance, as a general safety guideline, you should not park within 50 feet of a railroad crossing. Different jurisdictions may have varying laws, so it is always advisable to check local regulations. By doing so, you can avoid fines and contribute to both vehicular and train safety.