I'm looking into adding the signed Truck routes in the New York state highway system for the Clinched Highway Mapping project. Some routes are signed, but not mentioned in the NYSDOT documents I have used for reference.
Before adding any, I would like to make an effort to get all similar routes in NY added at once. I know for sure there's a signed Truck NY 5 along I-890 in Schenectady. There was a question in the CHM forum a while back about a Truck NY 14 in Geneva. A CHM collaborator found Truck 9P and 29 signed in Saratoga Springs. Relevant wikipedia articles mention a Truck NY 19 in Brockport, a Truck NY 104 in Rochester and Irondequoit, and a Truck NY 298 but there is nothing in the article about it.
Since the wikipedia articles do not mention the Truck routes of 5, 9P, or 29, that we know are signed in Schenectady and Saratoga Springs, it seems other sources are needed to find all of the truck routes. So I am asking for help here. If you know about a signed truck route in New York and better yet can give its routing and even better yet give some documentation about it, please post here. Once we know what's out there, I'll get them added to CHM.
Truck 278 isn't signed with reassurance shields but it's well posted on guide signs (astoria blvd. between triboro and BQE)
27 Truck (eastbound only) from the Prospect Expressway to Caton Avenue.
Truck 117/Manville Road in Pleasantville. Barley counts but it is signed.
There is a signed Truck NY 19 in Brockport. As far as NY 104, it's a Truck TO NY 104, along East Ridge Rd, in Rochester/Irondequoit. It's for truck on the surface streets coming from St Paul Blvd to avoid a tight turn onto S Clinton Ave...directs trucks to use the Seneca Ave on-ramp.
There is a Truck NY 96 in Candor, NY. Heading NB, Truck 96 follows 96B north at that junction, and then turns left on Mill St north of town to rejoin NY 96. This is kind of strange: trucks are encouraged to used 96 instead of 96B to Ithaca because of steep grades near Ithaca, but they can't actually use part of 96 and are redirected to use a few blocks of 96B anyways.
Back when I was active on Wikipedia, I put together this list of "bannered" routes in New York (http://en.wikipedia.org/wiki/Wikipedia:WikiProject_New_York_State_routes/Resources/All-time_route_list#Special_routes). It probably isn't exhaustive, and others have already mentioned several of them, but it might at least serve as a good launching point.