The signs represent a designation earned by the community in the Bike League's Bicycle Friendly America program. You can see other cities at

http://www.bikeleague.org/programs/b...iendlyamerica/

Good luck with the in town commuting! I think the statistic that the DoT has issued indicates that about 40% of car trips are within 2 miles and 60% are within 5 (if my memory recalls correctly...). Therefore, you set a very achievable goal!