Question This sign means: Answers Trucks under 18,000 lbs. allowed. Hill ahead. Truck stop ahead. No trucks allowed. Explanation This sign warns that there is a steep hill ahead. Take a FREE Practice Test Now This questions appears in the following tests: Maryland Practice Test Montana Practice Test Kentucky Practice Test New Hampshire Practice Test Utah Practice Test Minnesota Practice Test New Mexico Practice Test Rhode Island Practice Test Maine Practice Test Indiana Practice Test New Jersey Practice Test Wisconsin Practice Test North Carolina Practice Test Oregon Practice Test