Why are traffic signals different in every state/territory in the US? « on: August 25, 2024, 07:12:35 PM » Author: Milwaukeeman2003
Just want to know why they look/operate differently in different states/territories when in other countries, including Canada, have nearly identical installations throughout their jurisdictions.
« Last Edit: August 25, 2024, 07:19:06 PM by Milwaukeeman2003 »		Logged

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	Re: Why are traffic signals different in every state/territory in the US? « Reply #1 on: August 26, 2024, 12:43:30 AM » Author: Baked bagel 11
Different DOT standards maybe? In Australia the only difference is whether the target boards are solid black or have a white outline.
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	Re: Why are traffic signals different in every state/territory in the US? « Reply #2 on: August 26, 2024, 01:11:12 AM » Author: Milwaukeeman2003
That’s what I’m thinking, but I’m not entirely sure. So in your country, the states have little to no authority in terms of traffic light designs?
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	Re: Why are traffic signals different in every state/territory in the US? « Reply #3 on: August 26, 2024, 08:24:23 AM » Author: Baked bagel 11
We have only 2 main manufacturers of signals, there are other slight differences but as a general rule the country has similar standards. Here is an intersection in Victoria. https://www.google.com/maps/@-37.8395183,144.9956557,3a,15y,322.28h,90.33t/data=!3m7!1e1!3m5!1s_b_85QSGMzPRgWg22kGZTQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D_b_85QSGMzPRgWg22kGZTQ%26cb_client%3Dsearch.revgeo_and_fetch.gps%26w%3D96%26h%3D64%26yaw%3D153.43423%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192?coh=205409&entry=ttu&g_ep=EgoyMDI0MDgyMS4wIKXMDSoASAFQAw%3D%3D here is an intersection in Canberra https://www.google.com/maps/@-35.2359471,149.0580235,3a,15y,126.98h,92t/data=!3m7!1e1!3m5!1s2hofykmzrRewn8-yCvvaTQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D2hofykmzrRewn8-yCvvaTQ%26cb_client%3Dsearch.revgeo_and_fetch.gps%26w%3D96%26h%3D64%26yaw%3D293.88797%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192?coh=205409&entry=ttu&g_ep=EgoyMDI0MDgyMS4wIKXMDSoASAFQAw%3D%3D As you can see, there is very little variation in the SIGNALS, the poles are essentially the same, just different colors.
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	Re: Why are traffic signals different in every state/territory in the US? « Reply #5 on: August 27, 2024, 02:20:47 AM » Author: Milwaukeeman2003
Works fairly the same way here. But here, the states dictate how the signal is installed, such as my home state banning permanent span wire setups and most of them using black doors, visors and backplates but yellow housings and most don’t have reflectors on the backplates. Some states, like Michigan, use fully yellow signals on span wires, Florida uses span wire signals that span across the intersection and are green in color while Mississippi currently installs fully black signals, poles and masts.
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Screw the 2028 120 lumen per watt mandate and DeviantArt! Love old cars, cassette tapes, radios, severe weather and most of all, lighting!

	Re: Why are traffic signals different in every state/territory in the US? « Reply #7 on: August 27, 2024, 07:21:52 PM » Author: Milwaukeeman2003
Texas often does the same thing for red arrows.
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Screw the 2028 120 lumen per watt mandate and DeviantArt! Love old cars, cassette tapes, radios, severe weather and most of all, lighting!