Question This sign means: Answers Stop. Side road. Two-way left turn. Farm machinery. Explanation Eight-sided traffic signs warn drivers that they must stop and yield the appropriate right-of-way at an intersection. Drivers may proceed when it is safe to do so. Take a FREE Practice Test Now This questions appears in the following tests: Montana Practice Test Arizona Practice Test Louisiana Practice Test Wisconsin Practice Test Wyoming Practice Test Maine Practice Test Oregon Practice Test New Jersey Practice Test Utah Practice Test West Virginia Practice Test Oklahoma Practice Test Nevada Practice Test Colorado Practice Test