Restricted vehicles


To ensure tunnel safety the following vehicles are not permitted:

  • vehicles and loads exceeding 4.6m high
  • vehicles carrying commercial quantities of dangerous goods
  • any vehicle displaying a dangerous goods placard
  • mopeds
  • tractors

Detection systems outside the tunnel notify drivers of height limits. Warning signals are initialised if the height limit is breached. All vehicles exceeding the height limit will be advised to take an alternate route. If drivers of over height vehicles proceed, entry will be prevented by an over height barrier structure