Question It is illegal to park: Answers Within 15 feet of a fire hydrant. Within 50 feet of a railroad crossing. Both of the above. Explanation There are a number of locations where it is illegal for drivers to park their vehicles. Drivers may not park within 15 feet of a fire hydrant or within 50 feet of a railroad crossing. Pass your DMV Written Test with flying colors Take me to the cheat sheet Tennessee This questions appears in the following tests: Tennessee Practice Test 15 Tennessee Practice Test 25