We have tried and in an ideal world this would work but motorists are not compliant enough when given this advice.

We would have to have staff in the live traffic to manage the filter. This would be high-risk and not all motorists are compliant.

The height of the vehicle does not always dictate if it is safe to cross. It can be about the aerodynamics, weight and size of a vehicle.

Because we reroute vehicles through our car parks via a side road before the bridge begins.

Single decker buses only.

If a vehicle is involved in an incident, we will seek damages to cover the cost of recovery operations and the driver may face criminal prosecution. Ignoring the bridge’s closed status can, therefore, have serious consequences for drivers of high-sided and vulnerable vehicles.

Sometimes this is because drivers don’t know they are high-sided, for example, if a member of the public has hired a van for the day. In other circumstances, however, some drivers will deliberately ignore the ‘closed to high sided and vulnerable vehicles’ status and continue on to the bridge.

We rely on members of the public to take responsibility for their safe conduct and decide by following the Highway Code.

We have weather sensors on the Humber Bridge which are linked to the bridge status on www.humberbridge.co.uk. We advise that you check this before making your journey so that you can factor in any delays that may occur due to High Winds. We also update the Humber Bridge Facebook and Twitter.

Although there is no definitive list of what constitutes a high-sided or vulnerable vehicle, we issue our own list of the vehicles that should not cross the bridge in high winds. This is based on historical data of which vehicles are most vulnerable to high winds, with input from the Road Haulage Association and the emergency services.

The list includes:

• Three wheeled-vehicles
• Motorcycles
• Mopeds
• Furniture/Luton vans
• Transit vans with modifications
• Articulated HGV (full or empty)
• Vehicles drawing a trailer or caravan
• Motor homes
• High-sided rigid HGV
• Articulated/rigid tipper (full or empty)
• Car transports
• Double-decker buses
• Abnormal loads – special types
• Cars with roof boxes

The decision is based on the strength and direction of the wind on the bridge. It is the sudden gusts that most often cause vehicles to overturn.

The Humber Bridge Board closes the bridge to high-sided and vulnerable vehicles when the wind becomes so strong it poses a threat to the safety of bridge users. When we do this, the safety of the thousands of people who use the Humber Bridge on a daily basis is the number one priority.