If you are driving through an emergency site, you:

• Should avoid driving over any unprotected fire department hose unless allowed by the officer in command
  Explanation:

  "If your car passes an emergency site, do not drive over any unprotected fire department hose unless the fire department official in command says it is okay."
• Can drive through the emergency site at normal speed, ignoring any obstacles or warnings
• Should honk your horn loudly to alert emergency personnel of your presence
• None of the above