It's hard to tell where you are, but if you're in the bay area and know enough to post what you did, you probably should also know that the city of San Jose did specifically select street lamps based on light pollution concerns from the astronomers at Lick.

https://www.quora.com/Why-did-San-Jose-install-yellow-street...

https://mthamilton.ucolick.org/public/lighting/Pollution2.ht...

As a transplant, it took some getting used to, because the low pressure sodium street lamps are roughly the same color as yellow stop lights. For better or for worse, the city of San Jose has been replacing the LPS lamps with LEDs for the past 6 years, but at least they're down-facing and create less light pollution than many other options.