How much does your state tilt BGS signs over the highways? Is there a standard degree?
note the sign here in Baltimore is direct on the pic but since it's tilted downward the gantry looks like its tipping over.
(https://farm5.staticflickr.com/4427/35801549884_3983d36345_c.jpg) (https://flic.kr/p/WxEits)
(https://farm5.staticflickr.com/4347/36498328721_32d46dcf0b_c.jpg) (https://flic.kr/p/XBetxF)
I have not seen a tilted sign in Nevada.
I imagine with advances is reflective sheeting, this wouldn't be much of a thing anymore. Better sheeting can increase the reflectivity and readability from the road level.
Massachusetts standard for overhead BGS panels is to tilt the top of the panel five degrees outward - see https://www.mass.gov/files/documents/2017/10/24/StdDwgsSignsSupports1990.pdf Page 32
Oklahoma generally does not.
Kansas does, and I've always liked that. It makes sense to tilt the sign forward a bit so that it actually faces the people who will be looking at it.
In Britain the norm for ground-mounted signs is a 5° turn away from traffic on tangent, and perpendicular mounting (0° turn) on curves. I don't know that there is a standard as such for overhead signs, but I think they are usually mounted vertically.
This gantry (https://www.google.com/maps/@30.4240285,-91.0744237,3a,75y,97.63h,85.56t/data=!3m6!1e1!3m4!1suE12tGiLxL2OGh_A6RRQ0g!2e0!7i13312!8i6656) in Baton Rouge has an older sign that is not tilted and a newer sign that is tilted.
PennDOT used to, but newer installations seem to have gotten away from this.
MaineDOT generally tilts the top side of their guide signs outward. The Maine Turnpike Authority's overheads, however, usually have no tilt.
I remember seeing older guide signs down in Rhode Island some years ago that had an outward tilt from the bottom of the sign panels. I've also seen this done over the Canadian border in New Brunswick. Anyone know if there is (was) any advantage to tilting the panels from the bottom vs. the top?
Quote from: roadman on February 23, 2018, 10:30:44 AMMassachusetts standard for overhead BGS panels is to tilt the top of the panel five degrees outward
I'm assuming that standard has been around for quite a while.
Overhead sign installations along I-95/MA 128 from I-90/Mass Pike to MA 9 did the opposite tilt (the bottom of the panel was tilted outward, i.e. an upward-tilt). These panels were erected during the early 70s (prior to 128 being designated as I-95). Given that all the overhead signs along that stretch had such; I have to wonder if the details on the plans were inadvertently mirrored.
One "survivor" BGS from the early 70s (https://www.google.com/maps/@42.314898,-71.2527452,3a,90y,167.94h,84.05t/data=!3m6!1e1!3m4!1sv2SdLP4czHqjff6eswz8eg!2e0!7i13312!8i6656) featuring the upward-tilt installation.
Interestingly, when the panels were replaced (but not the gantries) during the mid-90s (with ones featuring button-copy I-95 & 90 shields); most of the newer BGS' featured the same upward tilt.
In RI, some 80s vintage overhead BGS' along I-95 in the Providence area featured the same upward tilt as well.