If I want to minimize the line current draw of a magnetically ballasted lighting system that uses lag type NPF/LPF ballasts, how can I determine which capacitor capacitance value is appropriate for proper power factor correction?

For example, what capacitor do I need to add in order to enable power factor correction on a 120V 60Hz F20T12 preheat fluorescent tube fixture that draws 380mA using a simple series choke ballast?

Most of the old HPS streetlights here were complete glarebombs, and a bit too bright for a residential street. The new LEDs are slightly dimmer (lumen wise), but to my eyes they appear about as bright as the HPS lights.
Enclosed is a picture of what a typical LED streetlight for a footpath looks like. It is 50w and 3000K in color temperature, and quite a pleasure to walk under.
I will share a picture of a representation of what the LED post top outside my house looks like at night (to my eyes at least).
Maybe the brighter LED street lighting in the US would be brighter to Ria’s eyes to what is commonly installed in the UK.

When I visited Flagstaff, AZ in the summer, I noticed that they do use a good number of amber LED corn cob lamps and integrated amber LED fixtures over there to help minimize light pollution and protect nocturnal wildlife.

Interesting about monochrome LED, I really don’t have a valid answer to this  , SOX was monochrome because of what it was, I’m on the fence though as to why this would be needed to be recreated using LED? There’s only been colours in street lighting because of the lighting tech used through the years?

White light of the CCT that most LEDs put out is very disruptive to wildlife. Also, the fact that SOX is monochrome means that contrast is excellent, so you see movement more easily. Colour temperature for street lighting shouldn't be an issue for drivers, you have excellent CCT from your headlights.

I supposed we’d all have our own conclusions on here, but lower levels of lighting would be a start than super bright?

You want low levels of lighting..? Come to our street, what have I been saying..?

That’s how it is in the US. We have bright lights on very high utility poles with long arms. I have only seen a minimum of 50w LED installed around here, and that might be why I like it.

I guess it’s also a personal preference?, everyone is different, as Ria has said, Sammi suffers from night blindness, so LED and white light don’t work in that situation?
Me personally, I noticed something cycling home from work tonight, street lighting here has now become obsessed with very heigh columns with powerful lights on!, going back to our SOX days in our town we used to have just 5 metres concrete columns carrying 35 watt SOX, (lower lighting levels on lower columns), even on the A roads! and as I remember them it was enough for street lighting.

Now on these same routes, we have 8/10 meter columns carrying brighter lanterns as if mounting powerful lights higher up somehow illuminates the roads better!

If they were used for wildlife protection and dark sky use in the UK, narrowband amber LED replacements would probably be widespread.

Whereas here they were just an efficient answer to the 70s energy crisis! 

It would be more to protect wildlife and the night sky, because that’s what SOX lamps were most used for in the US.

More things to consider when designing my lighting system are brightness and “reach” of the light.
But what is everyone’s opinion on narrowband (monochromatic) amber (1800K) LEDs for street lighting?

Interesting about monochrome LED, I really don’t have a valid answer to this  , SOX was monochrome because of what it was, I’m on the fence though as to why this would be needed to be recreated using LED? There’s only been colours in street lighting because of the lighting tech used through the years?
What would the ideal CCT be for street lighting?, visual acuity can be achieved best by colours from the total opposite ends of the spectrum, i.e, 1800K and 6500K, however YouTube channel Technology Connections pointed out that sodium lighting wasn’t actually an ideal choice at all!

I supposed we’d all have our own conclusions on here, but lower levels of lighting would be a start than super bright?