What can be done if the persons involved in a crash are incapable of moving their vehicles?

• Leave the vehicles where they are and wait for help.
• Request any other driver with a valid license to move the vehicles
  Explanation:

  "If the individuals involved in the crash are unable to move their vehicles, they may ask any nearby driver with a valid license of the appropriate class to assist in moving the vehicles. The nearby driver is permitted to comply with this request."
• Call a tow truck immediately.
• Push the vehicles off the road by hand.