Question If stopped on the side of the road, how should you alert other motorists? Answers Rely on your taillights. Sound your horn. Use your four-way emergency flashers. Keep the driver's side door open. Explanation If you must stop on the side of the road, it is important to turn on your four-way emergency flashers to warn other road users. Take a FREE Practice Test Now This questions appears in the following tests: Nebraska Knowledge Test Class A , Nevada Knowledge Test Class B , New Jersey Knowledge Test Class B ,