Hmm. your utility doesn't have replacement Powr/Modules? well, you defiently take pride in making your ballast replacements look great! I see it's dated too, is that a requirement for replacement ballasts to have? Also what wattage is this?
I definitely prefer replacing ballasts on the bench rather than "in the air" - it's nice to be able to remove the door and replace the ballast. I would imagine that most utilities that run PowrDoor fixtures have some spare doors ready to plug in. In my old neighborhood with its shoebox streetlights, if there was a ballast or ignitor problem, the entire fixture was removed and the pole would have nothing on it for about 3-4 months until a new fixture was installed.
1) not required to date it. 2) 400w 3) It was repaired on a bench, I took the powr door down and repared it in the shop, safer than being in traffic any longer than I need too. I have put the intesection on "Red Flash" when working on fast streets that are curved when working on safety lights, lighted signs, replacing LED signals.
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Washington DC is BIG on using Powerdoor stuff too as well as Chicago and Arizona for both large and small wattages
My electric company does use powr/modules for higher wattage fixtures, and apparently my state is starting to go for that too.