Which of the following are used to mark railway crossings on public roads in Ontario?

• A large red and white “X” sign
• A yellow advance warning sign
• A flashing signal light and a barrier or gate
• All of the above
  Explanation:

  "All railway crossings on public roads in Ontario are marked with large red and white “X” signs. You may also see yellow advance warning signs and large “X” pavement markings ahead of railway crossings. Some railway crossings have flashing signal lights and some use gates or barriers to keep drivers from crossing the tracks when a train is coming."