Variable Message Signs

What are Variable Message Signs?

Variable Message Signs are used to deliver road information to road users in real time.  They are electronic message signs that display text information to Road Users.

The types of Variable Message Signs (VMS) range from simple one or two line message signs to fully variable signs that can include graphical displays that relate directly to real time traffic conditions, current freeway travel speeds or road safety messages.

 

Where can these signs be seen?

In Perth, these signs have been installed on the Kwinana Freeway, Mitchell Freeway and Graham Farmer Freeway systems, and major roads servicing these vital network links.

 

Displaying current speeds to road users

VMS can display operating speeds that are recorded at strategic points on the freeway using vehicle speed measuring equipment.  The display shows the current traffic speed at nominated freeway points as well as arrows indicating the speed trend, which is either increasing or decreasing. Using this information, road users can plan their journey with the full knowledge of current freeway travelling conditions.

We can alert you to traffic delays ahead

Another important function of VMS is to provide timely warning of unusual traffic congestion, traffic crashes, roadworks or other hazards that can affect journey time. The combination of information and timely delivery provided by strategically placed Variable Message Signs enables effective management of our freeway and wider road network systems.

For further information, contact the Traffic Operations Centre on 9428 2222.

 

Variable Message System in action on the Kwinana Freeway

 

Current Freeway Speeds at:

HAY ST 80
MILL POINT RD 75
SOUTH TCE 95

 

From this information, motorists can ascertain the current travel conditions on the monitored section of the freeway system.

Another important function of the Variable Message Signs is to provide timely warning of unusual traffic congestion, traffic crashes, road works or other hazards that can affect journey time.

A number of Variable Message Signs were installed as part of the Graham Farmer Freeway Tunnel system. These signs range in size from large units similar to the freeway signs to smaller signs on approach roads and at the tunnel entrance points. These signs provide valuable information on the status of the tunnel allowing important control of traffic entering or leaving the tunnel complex.

The combination of information and timely delivery provided by strategically placed Variable Message Signs enables motorists to avoid traffic snarls and allows better management of our Freeway and tunnel systems.

Modified: 25 Jul 2014