Variable message sign(VMS) is important equipment for monitoring and controlling system on both freeway and arterial road applications. Depending on the traffic situation, the variable displays inform, warn, and guide the motorists on highways and expressways.
● Certification of both MOT & MOPS
● own patent system
● Fault detection module and automatic operation system
● Asynchronous control
● Patent control card
|Expressway variable message sign|
|Resolution ratio||(64*N)*(64*M)||(48*N)*(48* M)||(40*N)*(40* M)||(32*N)*(32* M|
|Diode wavelength||Red 615-650mm,green 495-530mm,blue440-480mm,yellow 580-600mm|
|Color display||Amber,red-green-yellow,full color|
|Average power consumption||<50W/m2|
|Max brightness||≥10000cd/m2(amber>6000cd/m2 )|
|Brightness control||Manual,automatic, timning,remote setting|
|Drive model||Static constant current drive|
|Control model||Synchronous, asynchronous, wired network, wireless 4G, etc|
|Blind spot ratio||<0.0001，discrete distribution|
|Protective performance||Short circuit / open circuit / overvoltage / overcurrent / overload / overheating / leakage / lightning protection, etc|
|Operating tempreture/humidity||-40℃ ～ +60℃、10-80%, nodew|
|Storge tempreture/humidity||-50℃ ～ +80℃，10-85%, nodew|
|Grounding resistance||Working grounding resistance<4Ω，Lightning protection grounding resistance<10Ω|
|Effective visual distance||When the vehicle is running at the speed of 120km, the maximum dynamic visual recognition distance and the maximum static visual recognition distance that the observer (with normal corrected visual acuity of more than 1.0) can correctly recognize the contents of the sign within the specified visual angle under the conditions of sunny days and solar orthonormal standard surface with environmental illuminance greater than 50000lx, including snowy days, rainy days and night are more than 210m and 250m|
|Installation model||Gantry type, cantilever type and column type|
|Power supply||AC220V(1±15%) or AC380V(1±15%), 50±2Hz|
|Environment monitoring||Temperature, humidity, smoke, brightness, switching power status, box door status|
Variable Message Signs (VMS) are quite commonly used for the traffic warning information of road & bridge construction, fire-fighting, parking lots, etc. The high brightness and strong eye-catching LED technology deliver the traffic information to the driver, remind them to focus on their driving speed and pay attention to the weather, road situation, and so on. It can reduce the traffic accident by deploying the road traffic management.
E-RAOD VMS can activate self-diagnosis and report health status, monitor can identify equipment health status, current message ID,current operating mode temperature, humidity, etc
Industry-leading dual-voltage technology, it can tremendously improve energy efficiency and maximumly lower light pollution.
●NTCIP and MODBUS based
E-RAOD avriable message sign are programmed based on the world two most prevailing 1.programmed NTCIP (NationalTransportation Communications for ITS protocol) and Modbus, more than just that, we also provide customized protocol if necessary.