New temporary signal tailor-made for haul routes


Traffic Group Signals has launched the Metro Haul Route Crossing System - a wireless, temporary traffic signal range that complies with haul route permit conditions.

Currently available for hire, the Metro is thought to be the first of its kind and has been designed to combat safety issues 'which arise due to the high-speed nature of the roads affected'.

Announcing the new system, Traffic Group Signals said:  'At 11ft 2ins (3.4m) high, these signals include a high visibility, immoveable base unit and full height signal pole with reflective band and support for up to three signal heads. The leading technology provides contractors with the safest crossing solution for the haul routes on their site.'

Haul routes, particularly connected to major construction projects, can carry a wide range of vehicles, materials and people on a daily basis, making them difficult to plan for. Crossings that involve busy arterial roads were said to be a particular area of safety concern.

The use of temporary traffic signals to tackle these complexities is thought to be increasing, just as the sector is reducing the use of manual signals, Traffic Group Signals said.

However, temporary traffic signals are not always designed specifically for haul routes: 'Standard portable traffic signals are about 7ft 5ins (2.3m) and are not permitted under the Type Approval regime due to limited visibility with construction vehicles.'

Will Credicott, marketing manager at Traffic Group Signals, said: 'There is a wide range of safety concerns on haul routes that require stringent standards, so we have developed the Metro Haul Route Crossing system to specifically address these issues and meet the needs of contractors.

'Our unique system is battery powered and uses the latest radio communications so it can be deployed quickly and decommissioned without any complex infrastructure. As the system is completely cable-free its installation and subsequent removal at the end of the job minimises disruption to road users compared with traditional methods.'

The temporary signal LED traffic employs a full-sized LED traffic signal head fitted with the high-tech AGD306 radar and/or the LED pedestrian signal with a low-power AGD WAIT indicator and optional Radix tactile indicator.

The Metro can be programmed for nine vehicle phases and eight pedestrian crossings and can also combine with up to 34 Metro traffic signals to form a complete, temporary traffic control system.

Other features that are specific to the requirements of haul routes:

  • A dedicated crossing mode
  • Signals rest at green on the public highway when there is little traffic, to minimise the impact on busy arterial routes
  • The hold-off period limits how often the crossing will be serviced, which enables the needs of haul route traffic to be balanced against those of the public highway
  • Time of Arrival (ToA) technology, which identifies fast-approaching vehicles and avoids signalling vehicles in the ‘dilemma zone’ to red
  • Active channel management continuously monitors all radio channels to ensure the system uses the clearest available channel to maintain strong communication between signal units
  • Remote management means the crossing is monitored at all times by TMdesk. Remote activation and part-time operation is also possible with TMdesk Pro. This allows highways authorities and main contractors to work together on the site and produce an audit trail
  • The Signal Studio enables contractors to design their haul route crossings and locate signals onto a site map or TM plan and simulate them on a PC
  • Once a scheme has been tested and approved, the scheme tool produces a deployment Data Pack, which includes all necessary information to prepare and commission the signal configuration.

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