In most places riding on the sidewalk is both dangerous and illegal however, the decision does take careful consideration, and some may actually justifiably decide it safer to ride PRIMARILY on the sidewalk, though any serious cyclist will very rarely use it. The most important justification for riding on the sidewalk is: speed.. If you're the type who likes to ride a bike at a slow, leisurely pace, perhaps a beach cruiser or cheap "NEXT" wal-mart mountain bike, you're better off keeping your speed below 7mph, and very carefully staying on the sidewalk or on neighborhood streets, careful to yield COMPLETELY to any drivers pulling in or out of driveways, as well as pedestrians. There are reasons more serious cyclists / commuters may want to ride the sidewalk:
- You may want to ride the sidewalk IF:
- You're anything but VERY VISIBLE. If cars can't see you, get off the road or eventually you will get hit!
- You're riding 25mph slower than passing vehicles on busy roads. That means if you're on a busy 35mph road, and you can't maintain 10-15 mph, you should just get off onto the sidewalk.
- You've got a damaged bike, bad brakes and the like
- There will be a lot of drinkers on the road. Here in Baton Rouge, near LSU, that means in certain times and places I'll ride slow on the sidewalk just because I'm surrounded by 18 year olds full of liquor driving like maniacs everywhere...
- When you do ride the sidewalk:
- Don't exceed 5-7mph.
- Since you're using a surface not intended for you, YIELD TO EVERYONE COMPLETELY, expect no one to yield to you, you're in the wrong.
- Be aware that drivers backing out of driveways are likely to pull out right in front of you
- Be aware small children and pets can pop out when you least expect them
- Alert any pedestrians or other cyclists to passing, give them plenty of room, and don't pass to fast
- Only jump into the road if the car behind you will have PLENTY of time to react, and even then may be offended that you would do that, even if you're capable of matching his speed.
There are more than a few reasons for not riding the sidewalk: pedestrians, legality, unexpected obstacles, curbs, abrupt ends to the sidewalk, even worse surfaces than the road, more difficult to maintain speed, even more unpredictable to drivers who are constantly wondering if you'll veer out into the road, people turning into and out of driveways at high speed that don't want to yield to you since you're not following the law nor are you visible, the list goes on...
Like I said, I find I very rarely have to ride the sidewalk now that I ride a bike efficient enough to maintain 12mph+, know to wear bright neon colors and have learned about cycling safety