Do you stick to the main road or branch off into a neighborhood? (if there is one). We live on a main road and it's pretty busy at certain times of the day. There are a couple neighborhoods off of it that we'll head into because it's just so loud on the main street!
We used to live within walking distance of a bike path which was awesome. We can easily drive to the same bike path, different entry, but it's way easily to just walk out your door without having to do the in-and-out of the car thing several times.