I'm curious about different states' usage of advance turn assemblies for route signage, whether it be to follow the route you are on or for a route that is being intersected.
PennDOT frequently omits advance turn signs when following a route, just putting a single sign with an arrow to denote a turn. Sometimes, these signs are well in advance of the intersection, where an advance turn sign would normally go. This has led to me missing turns more than once.
The standard sequence I see in other states that I travel frequently (OH, MD, WV) are an advance turn assembly ahead of the turn followed by another assembly at the turn itself. This setup appears to be mandated by the MUTCD in Section 2D.29.
Are there any other states like PA that tend to omit advance turn assemblies?
Unless the assembly or individual signs are missing. West Virginia typically does an excellent job. Their approach is pretty close to MUTCD specs.
Indiana is also pretty good about this.
Kentucky's signage practice leaves some to be desired.
If not for the lack of JCT advance signage, Virginia is also pretty good about its signage.
I would say WisDOT is better at this than IDOT. And within IDOT, it depends on which district.
NJ is extremely variable. The 90-degree turn of US 206 in Princeton has good signage, but NJ 27's multiple such turns in Elizabeth go completely unsigned, except for reassurances once you already make the unsigned turn. The NJ 47 / NJ 41 intersection in Westville does a good job in signing the routing of NJ 47 as it turns, but the fact that going straight ahead from NJ 47 north here will get you to NJ 41 north goes completely unmentioned until you're already on it. Oddly, NJ 41 North is signed from NJ 47 South.
These signs indicating turn lane designations aren't required. In fact, the latest MUTCD discourages them unless they are mounted overhead. I am certain that Illinois and other states will heavily push back against this; not every road agency has money to blow on installing overhead gantries everywhere just for some turn lane signs. FHWA needs to realize that they aren't just writing the rules for state DOTs; they are writing the rules for every county, town, and municipal entity as well, and most of these more local entities don't have money or staff for overhead signs like this.
Ontario's are pretty outside of Southern Ontario - within Southern Ontario, signage for provincial highways can be a joke sometimes