Lesons learned so far from shooting long exposures at night

For these photos I'm shooting Kodak Portra 160NC.

A two minute exposure at F16 on well lit city street is about perfect but you should double or triple that time or lower the aperture one or two stops when shooting on a sparsely lit small town/country road, even with a bright moon.

Lesson learned? Bracket. Even if it's freezing and you're under dressed for the weather and maybe a little scared some dude will come barreling out their house with a shotgun asking what the hell you are doing standing in front of their house with a camera at 1 in the morning, you should bracket that shot because you never know if you may see it again.

I'll post some samples after I scan them this weekend.