Only in this state....

[kphoger]

I have seen something in Kansas that no one else does.

I .. see .. dead .. people ..

[Daniel]

Is this unique to only Michigan with the backlit overhead traffic control signs?  In this photo it is the ONE WAY sign, but have seen Left only arrows and even STOP signs as well in the State of Michigan?

https://maps.google.com/maps?q=Detroit,+MI&hl=en&ll=42.315686,-83.086756&spn=0.004387,0.006427&sll=27.698638,-83.804601&sspn=10.900733,21.643066&oq=det&t=h&hnear=Detroit,+Wayne,+Michigan&z=17&layer=c&cbll=42.316001,-83.084081&panoid=qNreYdAXTU-lviLYDnSZzA&cbp=12,71.41,,0,-0.09

They also use backlit signs a little bit in Ohio, mainly the Cincinnati area. However, Michigan's way of marking turning lights with the backlit "LEFT", "RIGHT" and sometimes even "THRU" rectangles mounted directly on top of the signal seems quite unique, as I have NEVER seen it outside of Michigan.

[Alex]

There was one on DE 7 near Hockessin as well in the 90's...it's now a regular traffic light.  In fact, I think there was 3 in New Castle County; none of which remain.

In case anyone was still interested, I just remembered to post about this. After a recent visit to Delaware, I drove through that third location that had the flashing green and recalled it. It was at the intersection of Stoney Batter Road and Middleton Drive in the Pike Creek Valley.

[agentsteel53]

Many states do black/white alternate. NJ has been doing it recently.  Delaware as well...although they do it backwards for some reason - black then white, not white then black.

I have seen this somewhere out west recently.  new I-580 in Nevada, maybe??

[roadman65]

I do believe that Texas is the only state to use "IH" for interstate designations.

I know many either use the letter "I" or simply "Route" like the North-East and some Middle Atlantic States even in signage on local roads.

[Brandon]

I do believe that Texas is the only state to use "IH" for interstate designations.

I know many either use the letter "I" or simply "Route" like the North-East and some Middle Atlantic States even in signage on local roads.

Wisconsin - "Highway" regardless of route status.  Hwy H, Hwy 16, Hwy 141, and of course, Hwy 94.  And yes, I have seen "Hwy 94" for I-94 in Wisconsin.

[roadman65]

That would explain why these states are dead against having duplicate route numbers, and yet the ones that identify the designation before it do not care.

[thenetwork]

I do believe that Texas is the only state to use "IH" for interstate designations.

I know many either use the letter "I" or simply "Route" like the North-East and some Middle Atlantic States even in signage on local roads.

I want to say that in Ohio over the years, there have been a few stray IH's and IR's on mileage signs.

[amroad17]

Newer signs have the I-shield on them like the two on I-71 showing the distance to I-270 south of Columbus (northbound) and the distance to I-275 at the 89 mm (southbound).

[roadman65]

Oh, and Kentucky with their traffic signals using a Tunnel Visor for their yellow signals, while using the cut outs for the red and green signals.  I do not see any other state doing this.  They may mix and match signal heads with the two types of visors, but to use a different ones for each color on  the same head in a normal basis hardly.

[roadfro]

Many states do black/white alternate. NJ has been doing it recently.  Delaware as well...although they do it backwards for some reason - black then white, not white then black.

I have seen this somewhere out west recently.  new I-580 in Nevada, maybe??

Not there. NDOT has just started using contrasting paint on concrete pavements. Their approach has been thin strips of black paint on the left and right side of each white line. This has been used on the I-580/US 395 north widening in Reno and the reconstructed pavement on I-80 in downtown Reno, in addition to new I-580.

[roadman65]

If I am not mistaken, both California and Southern Nevada also use ceramic buttons instead of the standard paint lane striping.  I have not seen these used anywhere else, although FDOT was experimenting with them on both FL 50 and I-4 in certain parts of Orlando.

Not in one state only, but in one region of the country.

[codyg1985]

^I think Texas uses these too, especially in construction zones.

[codyg1985]

In Florida, from what I have seen, is the only state to paint black lane striping between the white broken lane lines. 

Other states are using black borders around the white broken line, but I have never seen it used alternatively with the white lines except on Florida highways.

Alabama has started doing it recently on concrete pavement and bridge decks.

[Brian556]

I think Texas uses these too, especially in construction zones.

Interstates in Texas built in the late 60s that had concrete pavement had button lane markings until they were overlaid with asphalt.

How 'bout Florida's sometimes odd uses of 18x18 9-reflector yellow diamonds. They sometimes use them for bridge ends, where a striped marker would typically be used, and once I saw several mounted at a 7ft height on the right side of the road; if I remember correctly, it was for a lane ending.

Also, Florida using green reflectors on the back of median-tip deliniators. This is something that I really applaud Florida for (median tip marking); becuase other states don't do it, and they really need to, bacause median tip are hard to see at night.

[US81]

^I think Texas uses these too, especially in construction zones.

I've seen them, but not since I was a child.   (A very long time ago....)

[agentsteel53]

How 'bout Florida's sometimes odd uses of 18x18 9-reflector yellow diamonds. They sometimes use them for bridge ends, where a striped marker would typically be used, and once I saw several mounted at a 7ft height on the right side of the road; if I remember correctly, it was for a lane ending.

New Mexico uses them synonymously with "oh hey, something interesting is happening here". 

[Scott5114]

Minnesota (if I remember right) uses an odd yellow-and-black reflective marker at the beginning and end of guardrails. One is a triangle pointing down, the other is pointing up. Never could figure out what those were for.

[roadman65]

I think Texas uses these too, especially in construction zones.

Interstates in Texas built in the late 60s that had concrete pavement had button lane markings until they were overlaid with asphalt.

How 'bout Florida's sometimes odd uses of 18x18 9-reflector yellow diamonds. They sometimes use them for bridge ends, where a striped marker would typically be used, and once I saw several mounted at a 7ft height on the right side of the road; if I remember correctly, it was for a lane ending.

Also, Florida using green reflectors on the back of median-tip deliniators. This is something that I really applaud Florida for (median tip marking); becuase other states don't do it, and they really need to, bacause median tip are hard to see at night.

Yeah, it is quite hard to find a median break at night.  The green reflector does help a lot, especially when there is no turn lane present to distinguish a break.

[kphoger]

Minnesota (if I remember right) uses an odd yellow-and-black reflective marker at the beginning and end of guardrails. One is a triangle pointing down, the other is pointing up. Never could figure out what those were for.

I've started becoming aware of just how many little extra signs like that Minnesota uses.  I assumed the little guard rail signs were to alert drivers (both cars and snowmobiles) of the guard rail's location when it's completely covered with snow.

[roadman65]

SC used to paint reflectors on the interstate overpass piers.  Some still exist today, but  now mostly faded behind normal reflector signs that presently alert drivers of the piers.

Then, MN. I see from photos and google, paints all  (or most )of its traffic signal poles yellow up to the mast arm.

[doogie1303]

Only in Wisconsin - one piece sine salads

This and others on http://www.alpsroads.net/roads/ri/us_6/

Hey, it saves on fasteners. 

Also, RI likes to use 4x4's for sign posts.

[PHX06]

Only in Georgia are there police every 2 miles along I-75 ready to issue $809 tickets and mandatory court appearances for going 21mph over in the middle of the night with no traffic around for miles.

[Brandon]

Only in Georgia are there police every 2 miles along I-75 ready to issue $809 tickets and mandatory court appearances for going 21mph over in the middle of the night with no traffic around for miles.

Sounds like Ohio.

[Daniel]

Only in Georgia are there police every 2 miles along I-75 ready to issue $809 tickets and mandatory court appearances for going 21mph over in the middle of the night with no traffic around for miles.

Ohio says hi.