Full colour modular VMS as an alternative to static signs?

Date: 4/3/2010

Source: ‘Spread the message’, Tolltrans 2010, pg. 68-69

Until recently, Variable Message Signs (VMS) were only used to present basic tolling information in the US because of their limited display capabilities, complex requirements and high cost.  Now several transport departments in the US are using high-resolution full-colour VMS to replace many of the static signs.  Recent changes in products available to cause this change include:

• Lower unit costs (a single controller can operate six panels)
• Simplified maintenance (panels are modular, self-contained and weigh as little as 11kg)
• Maximised panel lifetime (panels include redundant power supplies and operate at an appropriate temperature without the need for ventilation to maximise LED life)
• Signs use the standardised National Transportation Communications for ITS Protocol (NTCIP)
• Local control is possible without a need for a laptop via an auxiliary control panel
• Easily mounted on to existing static signage supports.

These VMS can display bright logos or traffic signage symbols which are easily recognisable by drivers and improve motorists’ reaction time. They also allow agencies to dynamically arrange lanes for Electronic Toll Collection (ETC), close lanes or alter payments taken in each lane.

This type of sign may be applicable to dynamic lane signage for managed motorway applications in the UK

Keywords: Emergency, Incident, Payment, Safety, Traffic information, Traffic management