After 42 miles in the service of bike transpo yesterday, I rolled into the driveway at almost 9 p.m. last night. Impatient cats milled around the basement. The one with 27% more toes than ordinary cats launched at me and stapled herself to the middle of my back in case I was going back out the door....

As someone who has commuted by bike for more than 20 (closing in on 30) years, I have picked up knowledge and information from the street. But Commute by Bike is a fantastically informative website for commuting riders who don't want to wait for trial and error. One thing struck me right away. When...