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National Boards => General Highway Talk => Traffic Control => Topic started by: Pink Jazz on October 16, 2015, 03:26:04 PM

Title: Bulb matrix (Eggcrate) DMS still in use
Post by: Pink Jazz on October 16, 2015, 03:26:04 PM
I was wondering, I would like to know which states still have some bulb matrix (aka Eggcrate) DMS still in use.  The bulb matrix DMS is one of the earliest types of non-static DMS, predating flip-dot, fiber optic, and LED DMS.

I think I remember seeing one in the Orlando area in 2003 displaying the estimated travel times to theme parks, although I can't remember which highway it was on.
Title: Re: Bulb matrix (Eggcrate) DMS still in use
Post by: Mohkfry on October 16, 2015, 04:45:51 PM
GDOT still has a couple in the Atlanta area along I-75, unless they've been replaced in the past year. I see them on the way from Indiana to Florida and vice versa.
Title: Re: Bulb matrix (Eggcrate) DMS still in use
Post by: roadfro on October 17, 2015, 06:46:57 PM
NDOT has gotten rid of a lot of the traditional bulb DMS displays. They had several on freeways in the Las Vegas area, but many were replaced during various freeway expansion projects of the last 5-10 years.

The only older displays I know of still around, courtesy of Street View:
* I-15 north, approaching Flamingo Road (exit 38) (https://www.google.com/maps/@36.1059166,-115.1805129,3a,75y,4.74h,90.33t/data=!3m6!1e1!3m4!1sx0mMe_BinUbeoTGsYwpfNg!2e0!7i13312!8i6656).
* I-15 north, approaching Charleston Blvd/SR 159 (exit 41) (https://www.google.com/maps/@36.1510573,-115.1649056,3a,75y,36.11h,86.11t/data=!3m6!1e1!3m4!1sE08pNxrsEfO33BVy_X1X0g!2e0!7i13312!8i6656). This one will be replaced whenever NDOT gets going on Project Neon.
* I-15 south, approaching Spring Mountain Road (exit 39) (https://www.google.com/maps/@36.137436,-115.1772329,3a,75y,214.66h,90t/data=!3m7!1e1!3m5!1sAYcZLEE6x8mWOAcF5XclBw!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3DAYcZLEE6x8mWOAcF5XclBw%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D209.17723%26pitch%3D0!7i13312!8i6656).
Title: Re: Bulb matrix (Eggcrate) DMS still in use
Post by: odditude on October 18, 2015, 01:01:50 AM
There are several of these on I-95 in PA.
Title: Re: Bulb matrix (Eggcrate) DMS still in use
Post by: AsphaltPlanet on October 18, 2015, 01:46:04 PM
Ontario has basically phased them out, though there still are a few of the older style around:

(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.asphaltplanet.ca%2FON%2Fhwy_401_images%2FContracts%2F2013-2014%2F2014%2F09-Sep%2F401_dv_366-25_east_C_Sep14.jpg&hash=09c3cb2296cede6972862b46133c7e95d99f94d2)
www.AsphaltPlanet.ca/ON/hwy_401_images/Contracts/2013-2014/2014/09-Sep/401_dv_366-25_east_C_Sep14_24x16.jpg
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