Question Crossbuck signs indicate: Answers Railroad crossings. School zones. No passing zones. Hospitals. Explanation Crossbuck signs tell drivers to yield to trains at a railroad crossing. Drivers should not try to outdrive a train. Take a FREE Practice Test Now This questions appears in the following tests: New Jersey Practice Test Nevada Practice Test Nebraska Practice Test Idaho Practice Test Utah Practice Test West Virginia Practice Test North Carolina Practice Test Washington Practice Test Hawaii Practice Test Louisiana Practice Test Oregon Practice Test Maine Practice Test Michigan Practice Test Missouri Practice Test Iowa Practice Test North Dakota Practice Test Florida Practice Test Montana Practice Test Minnesota Practice Test New Hampshire Practice Test Indiana Practice Test Colorado Practice Test Wisconsin Practice Test Oklahoma Practice Test Rhode Island Practice Test Texas Practice Test South Carolina Practice Test