http://www.fosters.com/news/20190701...-use-full-lane
As I recall the speed limit on Weirs Blvd is either 35 or 30-mph which is not too slow, not too fast for a car to share the road with a bicycle. As already mentioned but worth mentioning again, having the one to three feet of pavement that is outside the white line at the edge of Weirs Blvd is better that what's usually available on Route-3 in central NH so that makes it a little safer for the bicycles.
Is not too unusual to see the bike pedalers on Weirs Blvd wearing large back packs all loaded with with shopping bags of food that was probably just purchased maybe at the nearby Shaw's, so apparently in the summer they use their bikes to get to and back from the grocery store for food shopping.
Hey, not everyone has car for getting around here, and some really depend on their bicycles in the warmer months as a way to go food shopping.