Under what circumstances is driving in reverse on an expressway prohibited?

• Only during rush hours
• When there is no oncoming traffic
• Only in adverse weather conditions
• Always, under any circumstances
  Explanation:

  "Driving in reverse on an expressway is prohibited under any circumstances due to safety risks. It disrupts traffic flow, increases accident risk, and poses significant hazards. In emergencies, you must find the nearest exit or pull over safely instead of reversing."