LED Warning Trailers with variable message signs (VMS) are warning drivers safely and reliably.
1. What standard are the VMS designed to?
AS 4852.2, Variable Message Signs – Portable Signs.
2. What does VMS stand for?
VMS stands for “Variable Message Sign”.
3. What does a VMS do?
A VMS allows the operator to program text-based messages or graphic images into the memory of the VMS trailer controller so that they can display those messages or images to motorists.
4. Where can a VMS be used?
VMS can be used in road construction worksites, at mine sites, at sporting event venues, public events, shopping complexes, airports, on council roads, and on main interstate highways to name a few.
5. What traffic speed zones are the VMS suited for?
LED-VM1720X1100/1100C: are suitable for approaching vehicle speeds up to 60 km/h.
LED-VM2440X1400/1400C: are suitable for approaching vehicle speeds up to 90 km/h.
LED-VM2650X1720/1720C: are suitable for approaching vehicle speeds greater than 90 km/h.
6. What are the dimensions of the VMS display screens?
LED-VM1720X1100/1100C: The display housing itself is 1720mm wide x 1100mm high and the actual LED display area is 1600mm wide x 960mm high.
LED-VM2440X1400/1400C: The display housing itself is 2440mm wide x 1400mm high and the actual LED display area is 2112mm wide x 1280mm high.
LED-VM2650X1720/1720C: The display housing itself is 2650mm wide x 1720mm high and the actual LED display area is 2450mm wide x 1600mm high.
7. Does the VMS display have glass on the front of it, will this break?
It’s not glass, it’s called polycarbonate and it’s very tough and durable and can protect the LED display and keep the display from the weather.
8. What is the weatherproof or environmental protection level of the VMS?
IP54.
9. Is the polycarbonate bulletproof?
That is quite a common question. No, it’s not. Polycarbonate can take a fair amount of punishment from the weather and small slow-speed projectiles like stones but it’s no match for a bullet.
10. Why does the display screen have a slight frosty look to it?
The Polycarbonate display screen has had an anti-glare (anti-sun glare) process added to it. This effect helps cut down on sun reflecting off the display screen and making the messages hard to read and preventing the sun reflection from causing a hazard to motorists.
11. How much do the VMS weigh?
LED-VM1720X1100/1100C: 700kg.
LED-VM2440X1400/1400C: 750kg.
LED-VM2650X1720/1720C: 900kg.
12. How is the display raised and lowered?
Using an electric hydraulic pump. The operator simply presses a button to raise or lower the display.
13. Can the VMS display face different directions in relation to the fixed trailer chassis?
Yes, the VMS displays can face any direction within 360 degrees but they can’t continually rotate in one direction due to power and data cables that can’t be stretch continuously around the center mast the display is mounted on.