There are still several several places across the United States that use the white strobe lights at traffic signals, but it is indeed illegal on a federal level, with no room for state or local exemptions. It just isn't being enforced as it should be. It's illegal for a main approach to a signalized ...

I believe those are an Econolite polycarbonate signal.

FOUND IT! After doing some more digging after you called out the Econolite namebrand, I found two definite candidates. These are either GTE polycarbonate, or Eagle Mark IV signals, depending on how far the "bubbles" stick out in the back. The ...

For those of you who may be traffic signal buffs....

Do you know who manufactures these signals?

http://img97.imageshack.us/img97/7554/kd7sjn114trafficlightch.jpg

http://img4.imageshack.us/img4/4261/nc6w.jpg

This is one of the most widely used signals out there.... if not the widely most ...

I can kind of understand all the lights on the cantilever for the approach lanes from the south... since it's higher speed traffic that will approach the crossing and then the traffic signal, but I can't understand having three sets of lights on the cantilever plus two mast signals, plus back facing ...

Say good evening to the intersection of W Britton Rd and N Western Ave in Oklahoma City, OK.

http://img4.imageshack.us/img4/2771/image033vn.jpg
(I made this a link because of the size of the image.)

This is an intersection that has a railroad track (in good shape...likely very active) that runs ...

Well, that's what the wigwag was based off of.... so, yes.

As far as I've always heard, it was designed to simulate the old wigwag indication for "stop", but without any moving parts.

Okay.... this is something I've only recently begun to pay attention to...

http://villagethinker.files.wordpress.com/2009/08/waysidehorn.jpg

The quiet zone signals that are placed alongside wayside horns. I understand that the :redx: indication tells the train crew not to sound the horn at the ...

Mike, you may know about these since you live in Arizona...

What do you guys think about these new HAWK signals that are being tested for pedestrian crossings?

http://local4traffic.files.wordpress.com/2009/08/hawk-signal1.png

http://boiseguardian.com/wp/wp-content/uploads/2008/08/hawk ...

You're probably done with this project, but if you work on it further, here are some other variations of the stop beacons that I've saved from Google Maps and Google image searches.... for similar reasons.

http://img4.imageshack.us/img4/4778/0020a.jpg
http://img3.imageshack.us/img3/6650/dcp03637 ...