You sound like you know what you're doing, so you're probably aware that sidewalk cyclists are something like 20 times more likely to get hit by a car, mostly because motorists aren't expecting a fast moving cyclist coming out of the sidewalk at an intersection or driveway.

There's a cyclist I know who hasn't driven a car since the 1980s. He insists on riding exclusively on the sidewalk because “roads are too dangerous!” As proof, he tells me about his multiple hospitalizations, emergency room visits and broken bones from getting hit by cars — which occur while he rides on the sidewalk.