Question This sign means: Answers Road construction/maintenance area. Side road. Railroad ahead. Explanation Diamond-shaped signs are used to warn of actual or possible hazards. The color orange is used for warning signs usually found in construction or maintenance areas. Take a FREE Practice Test Now This questions appears in the following tests: Alabama Practice Test Iowa Practice Test Georgia Practice Test Illinois Practice Test Wyoming Practice Test South Dakota Practice Test Mississippi Practice Test Kansas Practice Test Maine Practice Test Kentucky Practice Test California Practice Test Tennessee Practice Test Delaware Practice Test Arkansas Practice Test Wisconsin Practice Test Arizona Practice Test Connecticut Practice Test