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AARoads Forum

Regional Boards => Northwest => Topic started by: KEK Inc. on February 18, 2014, 07:18:46 PM

Title: Snoqualamine Pass Closure
Post by: KEK Inc. on February 18, 2014, 07:18:46 PM
Snoqualamine Pass is now closed due to weather.  Not sure about these new VMS signs they installed last summer.

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Title: Re: Snoqualamine Pass Closure
Post by: roadman on February 19, 2014, 07:33:46 PM
LCD signs and snowy environment don't mix.
Title: Re: Snoqualamine Pass Closure
Post by: KEK Inc. on February 20, 2014, 01:42:55 AM
LED, but yes.  LED doesn't generate much heat to melt the snow. 
Title: Re: Snoqualamine Pass Closure
Post by: roadman on February 21, 2014, 05:04:51 PM
My bad.  I presumed LCD because of the black on white speed limit display.
Title: Re: Snoqualamine Pass Closure
Post by: KEK Inc. on February 21, 2014, 05:43:52 PM
Most VMS signs now are LED, and some of the fancy ones can display somewhat high resolution messages.
Title: Re: Snoqualamine Pass Closure
Post by: TEG24601 on March 07, 2014, 05:44:30 PM
Technically both are correct.  They are LCD because they are liquid-crystal displays.  However, the backlight, instead of being fluorescent lights or other source are LEDs.  The old LCDs were orange on black, the new LEDs/LCDs are full color, and can fake BGSs when needed.
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