Most roads are in cleared of snow and ice and are usually well lit. If the street is not well lit and it is covered in ice then yes a teenager should not be driving on it.
I live in suburban Minneapolis. We go weeks with ice covered neighborhood streets, and they are lit only at intersections. Teens learn to drive safely in this environment.
Teens have a higher fatality rate than almost every other driving cohort except 80+ and winter driving conditions are more dangerous than non winter conditions. Teens do not drive safely compared to other age groups in this environment or any other environment.
Fatality rate is more or less irreverent. Pretty much nobody is dying from snow caused mishaps.
Teens die a lot because of gross errors in judgement, drunkenly flying off a cliff on their way to prom with eight people in the car, that kind of stuff. Those kinds of errors mostly tangential to snow and lighting.
By "outside city limits" I believe OP was being general, not specifically talking about large cities.
I live in a rural area. I can think of exactly four street lights that are within a 10-mile radius of my home, and I'm not that far outside town. So yeah, it's pretty dark at night.
Yes, roads around here are mostly cleared of snow and ice, but they're still dirt/gravel roads and the snow is usually pushed off to the shoulders where a bicycle would be riding, and even then, I'm sure you can understand that dirt absorbs water and will then refreeze. It's not a particularly safe place to be riding a bike.
