VARIABLE TRAFFIC SIGNS Overview Specifications Case Study

Speed Limit sign(SLS)

In daily management of city traffic, LED variable message sign (VMS) is playing a increasingly important role. It provides clear and distinguishable road instructions to the driver and enables immediate establishment of urgent control information from traffic control center. All these advantages lead to a wide range of application of LED VMS worldwide. As a part of traffic Signs,the Speed Limit Signs (SLS) can remind the driver ahead road speed limits, it can make traffic to be orderly.

Variable Traffic Signs as “Speed Limit Sign” will have speed indications that can be changed as 80,60, 50, 30 km/h to inform the drivers on the maximum speed allowed in the tunnel. The dimensions of Lane control sign housing shall be,In Tunnel VTS 800x800 mm,Out of Tunnel VTS 1200x1200mm.

Strong cabinet architecture

2mm Aluminum housing, fully welded with internal strength,

ensuring perfect screen performance in the harshest environments and severe weather conditions.

Auto dimming

Probes are applied to the front and back of the display, it can ensure that the display brightness will change accordingly whether sun exposure to the back of the screen or positive.

En12966 compatible

Yaham SLS is a EN12966 based traffic-related Information

display and networkable with other displays, terminals and platforms.

Easy installation

To install the speed limit sign, one should just simply spin the lock, no screwing is required.


As a part of our efforts in energy efficiency, Yaham SLS combines

Yaham-engineered optical lens technology and industry-leading dual-voltage technology, it can tremendously improves energy efficiency and maximumly lower light pollution.

Remote control

Different signs can be switched remotely and wirelessly. In addition, SLS can also be remotely switched on and off.



Color configuration
Red circle, full color variable digit area

Cabinet size
optional 800 x 800mm / 1000 x 1000mm / 1200 x 1200mm

Power supply
optional 110 - 230AV / 12V - 24V DC

Cabinet material
Aluminum alloy

45 kg

Viewing angle

Dimming level

RS485/ RS232/ GPRS/ Ethernet/ 4G/ 3G

Electric protection
Overload protection and Short circuit Protection

Portable-mounted / Fixed-mounted

Back access

Operating temperature

Operating relative humidity

Ingress protection

Power consumption (Max)
50 W


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