This one is a Hubbell but I forget which model. Hubbells are VERY uncommon around here. I believe this light and the others around it are owned by IDOT. There are some M400A3's and A2FCO's as well. All HPS, possibly 400w.
CDOT lights are really varied... I think CDOT lights in Denver use the contractors to build them, so they look a lot like XCEL energy choices. Especially the lights on I-70 i the mountains. But I wonder if the lights on I-70 are maintained by Xcel energy, because I-70 stays in that Xcel energy zone the whole time in the mountains to grand junction.
But to this picture: This is a Hubbel RLC. You see lots of these in Colorado, well in the southwest side. Like close to Durango. They get fairly common.
What about the OVH/OVG? xD Those change model names because of the lens configuration. Also OVD/OVF/OVY. Three different names for the same fixture, but different lens configuration. xD
I remember those! Also Interstate 94 has a BUNCH of those median installed twin short arms (BUT REALLY TALL POLES) set with MOSTLY GE M-400A2 HPS!!!! Am I right Gil? They even continue into Chicago city until you get DEEPER, then they become a bunch of TALL Davit arms!!! With smaller GE FCO fixtures!
Higher rise truss arms the older setup... the lower rise like above are newer.....in Northbrook and those areas you will see those with ROUND weird FCO/Sag lens fixtures...I haven't yet to be able to identify them, but they used a few different round ones.....There's a lot of those in North Milwaukee Ave to South Milwaukee Ave....if you keep going south...BOOM you see Chicago Crime Fighters on taller poles with shorter arms for just like 3 blocks then its back to the round fixtures!
But to this picture: This is a Hubbel RLC. You see lots of these in Colorado, well in the southwest side. Like close to Durango. They get fairly common.
And not exactly, the RLC is designed a bit different as it has a flatter door. Unlike the drop lens version which has an angle.
But like you said they have the same spec sheet.
I don't really get the changing names per lens thing either. Why Cooper and Hubbel do it, Beats me.