Title says it all. What kind of high mast fixtures do you see on your freeways? Here's what WSDOT used:
HID:
- Holophane 1100 Series
- GE HM-1000
- Holophane HMST
- Holophane HMSC
- GE X209
- Holophane HMSD
- GE HMAA
- Holophane HMAO S
- Holophane HMAO J
- Unknown
LED:
- Holophane HMAO LED
- Holophane HMAO LED II
- Holophane HMAO LED III
I think the Holophane HMAO LED IV is being used, but I don't know.
