Images of a new safety system that will help to keep the Dartford Crossing operating safely following the removal of payment barriers have been published today by the Highways Agency.
Since it launched on 30 November last year, Dart Charge has already helped to speed up journeys by removing the need to stop at a barrier to pay the Dartford Crossing charge. But to get the most benefit from the changes, there needs to be a new way of identifying and managing overheight vehicles and dangerous loads before they enter the tunnel – a job until now that was carried out at the payment barriers. This is part of the wider changes which include signage on the approach to the Crossing, to give HGV drivers enough warning to get in the correct lane.
All major tunnels have rules about what substances can be taken through them and the Dartford tunnels are no exception. Vehicles carrying some of these substances may require an escort though the tunnels; some others may be prohibited altogether and need to find an alternative route. In addition, the two tunnels at the Dartford Crossing are slightly different sizes, having been opened almost 20 years apart. Vehicles more than 4.8 metres high can only use the eastern tunnel, and vehicles more than 5 metres high cannot use the tunnels at all.
The new safety system will use various detectors to identify the vehicles, signs to encourage drivers to get into the correct lane in good time, and barriers and traffic signals to control them - bringing them to a safe stop and turning them around if necessary. Lanes at the side of the main carriageway will enable this to be done quickly and efficiently, minimising delays for other drivers.
The system has been extensively tested over the last six months at a disused airfield using vehicles from a local haulage company.
With Dart Charge, drivers no longer stop at a barrier to pay the crossing charge, speeding up journeys and reducing congestion. But the barriers are also the point at which we have identified and managed dangerous loads and oversized vehicles – so now we need a new approach. This system has been extensively tested and will be able to do the job effectively, and without requiring every driver to stop. It is a big part of fully realising the benefits that Dart Charge is already bringing.
Construction of the new system of traffic signals and barriers on the northbound carriageway will begin in late January and is due to be completed by early April.
While the new system is installed we will continue to use the re-configured booths and barriers to manage northbound over-sized and dangerous goods vehicles. Journey time improvements following the introduction of Dart Charge will be improved further once the old barriers are fully removed and the new system in place, however there has still been an improvement (averaging around four minute quicker journeys northbound compared to nine minutes southbound).
Connect Plus, the Highways Agency’s main service provider for the whole M25, are carrying out construction work associated with the project.
Our construction work will be ongoing whilst we build the new tunnel safety system, consisting of new signals and barriers. It is important to remember that these barriers will be in the ‘open’ position most of the time, and will only need to be used when a non-compliant vehicle is detected. To maximise the effectiveness of the new system, drivers – in particular HGV drivers – are encouraged to familiarise themselves with the future layout.
To date, over-sized and dangerous goods vehicles have been managed by the barriers at the old payment booths. However, with the introduction of Dart Charge and the ongoing removal of the payment booths a new method of stopping these vehicles from entering the tunnels is needed.
The new system will detect whether a vehicle is too tall, wide or long to enter the tunnels or whether it is carrying hazardous goods that mean it cannot enter the tunnels or needs to be escorted. These will trigger a system of traffic signals and barriers that will stop the vehicle.
The new system has been designed to ensure that when a vehicle needs to be diverted away from the tunnels it is done in a way that causes the minimum disruption and delay to all drivers using the northbound carriageway.
Turning back any vehicle will cause some delay to other road users but is essential for the safety of all road users. The Highways Agency wants to ensure this happens as rarely as possible and is working with partners such as the Freight Transport Association, Road Haulage Association and other organisations, including those representing overseas haulage companies, to promote the tunnel height and other restrictions at Dartford to ensure drivers comply with them.
The Highways Agency has published guidance for these drivers, and this can be found on their website.
The Dartford Crossing in Kent faced its first major challenge this morning since collection of tolls at the site was removed over the weekend and replaced by a numberplate recognition charging system.
Critics say the charges should be abolished too - and many agree that the only real way to smooth out traffic over the Thames is to build another crossing entirely. But Monday's rush hour largely went without a hitch as "free flow charging" came into effect.
David Johns reports, speaking to businessman Chris Billing, Dartford Crossing Project Manager Nigel Gray, Natalie Chapman from the Freight Transport Association, and Dartford MP Gareth Johnson.
Free-flowing traffic passes through the Dartford crossing after the barriers and toll booths come down.Read the full story ›
Drivers using the Dartford Crossing are being reminded that a new toll payment system has been put in place. Cash will no longer be accepted at toll booths - instead payment must be made online or at selected shops.
We speak to Nigel Gray from the Highways Agency.
Today marks the first day drivers no longer need to stop at toll booths to pay to use the Dartford crossing. The busy commuter route in Kent has instead opted for online payments - similar to the London congestion scheme. It's hoped the change will reduce congestion and journey times however, the price to use the crossing has gone up. Nashreen Issa has more.
Work began at 6am today to remove 27 toll booths on the southern end of the Dartford Crossing.
The booths on Britain's busiest motorway are being scrapped and replaced with an electronic payment system.
The changes at the Dartford Crossing on the M25 east of London are designed to improve traffic flow.
But the removal of the 27 toll booths at the southern end of the crossing will result in roadworks until March 2015.
And car drivers using the crossing will from today face a higher daily charge - with the fee, also payable by phone or post as well as online, going up from £2 to £2.50. Charges are also rising for goods vehicles.
The Highways Agency is hoping for a minimum of congestion at the start of the new system.
An agency spokesman said: "We're starting at 6am on a Sunday when traffic will be comparatively light and there will be plenty of signs up to tell people about the new arrangement.
"Monday morning will be more of a test but we are trying to do everything we can to let people know about the changes."
The temporary suspension of charges at the Dartford Crossing has been lifted this afternoon. The suspension was introduced just before 10am to alleviate the traffic caused by ongoing work to prepare the site for the introduction of the new 'Dart Charge' system.
The Highways Agency has temporarily suspended toll charges on the Dartford Crossing southbound until further notice - because of congestion.
The decision was made just before 10am this morning to help ease the severe traffic that has built up during roadworks taking place to introduce the new Dart Charge scheme. The Highways Agency said it also wants to reduce the risk of minor collisions in queuing traffic. The organisation said: - 'We are doing all we possibly can to help keep traffic moving.'.
Kevin Harrison has been looking at the history of the Dartford crossing and plans for the future.