VMS Boards Explained: Hire Costs, Messages and Placement Rules

VMS board hire gives you a trailer-mounted electronic sign that warns drivers about works, closures, detours or events before they reach them. Hire is usually priced per day, week or shift, often as an extra on a traffic control quote. It works best with short messages and placement that follows your traffic guidance scheme.

This guide explains what VMS boards do, what drives hire costs, how to write messages drivers can actually read, and the placement and daily checks experienced crews use.

What is a VMS board?

A VMS (variable message sign) board is an electronic display, typically mounted on a road-legal trailer with a mast that raises the screen above traffic. Most units are solar-charged with battery storage, and many can be programmed and monitored remotely.

In temporary traffic management, VMS boards are used to:

• Warn drivers of upcoming works or closures days before they start.
• Advise of detours, lane closures or reduced speeds ahead.
• Inform the public about events, such as road closures for a fun run.
• Give real-time information during incidents or emergency works.
• Reinforce messages on high-speed roads where static signs alone are easy to miss.

VMS boards sit alongside static signs, arrow boards and other devices covered by the Austroads Guide to Temporary Traffic Management and AS 1742.3. They do not replace the devices shown on the plan.

VMS boards vs arrow boards

People often confuse the two. An arrow board displays a flashing arrow or chevron to direct traffic to merge or shift lanes at a closure. A VMS board displays text and sometimes symbols to inform drivers. Many jobs use both: the VMS board well in advance, the arrow board at the taper.

How much does VMS board hire cost?

VMS board hire is usually quoted as a separate line item, either by an equipment hire company or as part of a traffic control company's quote. We are not going to publish a single figure, because prices vary widely by provider, location, hire length and specification. What drives the cost:

Ask for an itemised quote, and compare it against our traffic control quote checklist so you know what is and is not included. For context on how equipment fits into the overall price of a job, see our traffic control cost guide.

Hiring direct vs through your traffic control company

You can usually hire a VMS board in one of two ways, and each suits different jobs.

Direct from an equipment hire company. This can suit long-term hires, such as a board warning of works on a project that runs for months. You will normally be responsible for arranging placement in line with your TGS, monitoring the board and changing messages, or paying the hire company to do it.

Through your traffic control company. The provider brings the board with the crew, places it according to the TGS, programs the message and checks it during their shift inspections. This suits short jobs, events and works where the board needs to move with the work area. It also keeps responsibility for the whole layout with one company.

Whichever route you choose, agree in writing who checks the board, who changes the message and who responds if it is damaged, tampered with or runs flat outside working hours.

How to write a VMS message drivers can read

Drivers have a few seconds to read a VMS board at speed. Messages that try to say too much get ignored. Good practice is:

• Keep each frame short. A few words per line, and only as many lines as the board shows clearly.
• Use as few frames as possible. Two frames is usually plenty; drivers may not see a third.
• Answer what, where and when. For example, "ROAD CLOSED / MAIN ST / SAT 6AM–6PM".
• Use plain words and standard abbreviations. Avoid jargon, slang and humour.
• Tell drivers what to do. "USE ALT ROUTE" or "EXPECT DELAYS" is more useful than "WORKS AHEAD" on its own.
• Keep it current. A message about works that have finished teaches drivers to ignore the next one.
• Follow authority requirements. Some road authorities set their own message conventions or require approval of message content.

Example messages

These are illustrations only. Your messages should match the approved traffic guidance scheme and any permit conditions.

Where should a VMS board be placed?

Placement must follow the traffic guidance scheme for the job, which a suitably qualified person prepares to suit the road, speed and traffic. General principles experienced crews follow:

• Far enough ahead to act on. Drivers need time to read the message and choose a different route or prepare to merge. On high-speed roads that means further back.
• Clear sight lines. Avoid crests, curves, trees, parked vehicles and other signs that block the view.
• Off the traffic lane. Position the trailer on the shoulder or verge where possible, outside the path of traffic.
• Stable and level. Use the outriggers or stabilisers, chock the wheels and check the ground is firm.
• Angled correctly. The screen should face approaching traffic and be readable from the driver's position.
• Safe for the crew. Choose a location where the crew can park, deploy and program the board without stepping into live traffic.
• Before decision points. For detours, place boards before the last intersection where drivers can change route.

If you are unsure how to read the placement details on a plan, our guide to how to read a TGS explains symbols and distances.

VMS board daily checklist

Use this at set-up and at each shift inspection.

Common VMS mistakes

From the field, these come up again and again:

• Stale messages. The works finished on Friday but the board still says "ROAD CLOSED" on Monday.
• Too much text. Four frames of detail that nobody can read at 80 km/h.
• Flat batteries. Winter, shade and heavy use drain solar boards. Monitor charge, especially on long hires.
• Poor placement. Behind a parked truck, on a curve, or too close to the works to be useful.
• Unsecured controls. An open control box invites pranksters to change the message.
• No owner. Nobody on the job is responsible for checking the board, so nobody does.

Night use, weather and security

VMS boards behave differently across a 24-hour hire, and experienced crews plan for that.

At night, a board set to full daytime brightness can dazzle drivers and make text harder to read. Most boards adjust automatically, but check it on your first night inspection from a driver's viewpoint, not from beside the trailer. Make sure the trailer itself is visible too, with reflectors and markings clean.

In wind, a raised mast and large screen act like a sail. Follow the manufacturer's wind limits, deploy the stabilisers properly and lower the mast if conditions exceed the limits. A board that blows over is a hazard to traffic and to the crew who has to recover it.

In winter or heavy shade, solar charging may not keep up with demand. Position the panel for sun where the TGS allows, monitor battery levels and have a plan for swapping or charging batteries before the board goes dark.

On unattended sites, lock the control box, keep keys with a named person and record the message at each inspection. If someone tampers with the message, you want to know quickly and be able to show what it said and when.

Packing down

When the works finish, turn the board off or change it to a relevant message straight away, then lower the mast, retract stabilisers, secure the trailer and remove it in line with the pack-down order. Record the removal time on your docket so the hire ends when it should.

Next steps

When you request VMS board hire, give the supplier your TGS, dates, hours and messages, and ask for an itemised quote. If you run a traffic control company, TrafWise lets you record equipment like VMS boards on digital dockets so hire time is billed accurately.