MASS DOT is testing out LED street lights and highmasts too on their freeways but RIDOT has a couple new LED installations that haven't been powered up yet. MASS DOT uses all relays while RIDOT's older freewaylighting has individual PCs. Since the 90s RIDOT has been using relays though, retrofitting some older installs in the 90s but all the recent ones have been brand new installs where they completely upgrade the lighting. Spot replacements are still HPS though. Thankfully their keeping it uniform here Massachusetts freeways it's a mix of white and orange everywhere it's crazy lol.
MASS DOT has more variety than RIDOT though. Connecticut DOT has a lot of variety too since both of them used HPS for spot replacements since the late 70s and them when the 90s changeout came along, there weren't a ton o fixtures to replace. RIDOT lights were mainly owned by the electric company so they still replaced MV with MV until the 90s so all the 400W mercs were replaced with 250W HPS M-250R2s and they oddle enough replaced all the 80s 400W HPS with M-400R2s in the 90s. So RIDOT lighting is much more uniform lol. New installations since the late 90s have either been OVFs or M-400 FCOs on davits.
From what I've seen, it appears the city of Vancouver has the largest LED installations in this area, there are a few smaller groups of isolated LED streetlighting change-overs such as these Kumho LEDs about 3 miles from where I live. A number of parking lots have been converted to LED like the picture above,these 101W CREE LED fixtures replaced 150W R37 HPS fixtures,the original fixtures were 250W MV Westy OV-25's.
Ah Boston, MA has the most LEDs i know of in the New England area. I like the GE Evolve LED but just about all the other LED street light designs out there are hideous.
Over here in the GTA a lot of the outer suburbs, Markham, Vaughan, Newmarket, and Mississippian have begun systemwide changeouts to LED. They finished changing out residential streets and even some arterials have received LED test fixtures. Toronto still uses a mix of MH and HPS for their lights.
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MASS DOT has more variety than RIDOT though. Connecticut DOT has a lot of variety too since both of them used HPS for spot replacements since the late 70s and them when the 90s changeout came along, there weren't a ton o fixtures to replace. RIDOT lights were mainly owned by the electric company so they still replaced MV with MV until the 90s so all the 400W mercs were replaced with 250W HPS M-250R2s and they oddle enough replaced all the 80s 400W HPS with M-400R2s in the 90s. So RIDOT lighting is much more uniform lol. New installations since the late 90s have either been OVFs or M-400 FCOs on davits.