As a 52 year old Brighton resident who commutes thousands of miles per year (Brighton to North Waltham, previously Brighton to Cambridge) I can tell you that there are several problems here, but the most prominent problem that I observe is a lack of education for cyclists on *how* to bike safely. Helmets are obvious, and lacking. Visible clothing is obvious, and lacking. Adequate lighting is both very expensive and somewhat, consequently lacking. Assuming that a cyclist is helmeted, visible, and illuminated there are two more serious problems, one obvious, the other not.
First let's cover the obvious problems.
Obvious and lacking is *mostly* obeying traffic laws. Bicycles are vehicles and should, in theory, observe the same traffic laws. I believe there are practical exceptions:
1. Moving to the front of the line by passing stopped cars. In traffic, cars pass cyclists all the time on the roadway. Not payback, but purely practical is a cyclists ability to pass stopped cars waiting for a traffic light on the right. I don't think anybody reasonable will deny a cyclist can safely pass a line of cars to advance to the stop light, and wait for a signal change.
2. If the signal change is preceded by a pedestrian "walk" signal, I advocate (and practice) cyclists moving through the intersection in advance of the green for motor vehicles, provided they yield to crossing pedestrians. This clears the cyclists from the intersection prior to motor vehicle traffic. In an ideal world, cyclists would wait for pedestrians to cross and a separate cyclists "green" would precede a motor vehicle "green" by 6-10 seconds.
Serious safety problems arise when cyclists ignore red lights and/or threaten pedestrians by their actions. The intersection at Mass Ave and Memorial Parkway in Cambridge is exceedingly dangerous, by example, because of cyclists creating dangerous situations for non-cyclists (pedestrians and motor vehicles) by the cyclists wanton disregard of anyone else's right to safely cross or navigate the intersection.
OK, now some might not like this, but here is another safety problem and not the least bit obvious to motorists *or* many cyclists.
Cyclists, to maintain safety, must assert themselves at certain times and places. Cyclists should also boycott/avoid certain roadways and intersections where traffic patterns make it nearly impossible to assure safe passage. That's the give and take. Cyclists need to stay away from some places, as presently constituted, and assert themselves in other locations. I'll give a couple obvious examples. When I leave work I descend down Lincoln Street in North Waltham. The Southern section of Lincoln Street is a two lane windy road with absolutely no shoulder, guardrail on one side, hillside on the other side, several blind corners. The posted speed limit is 20mph. I descend this hill at 30mph in the evening and I use the whole road on my side to do it. I have adequate lighting and knowledge of the road to do it in pitch dark in winter. There is absolutely no reason why any motor vehicle should attempt a pass and rarely does one try. Think about it. I'm going 30mph in a 20mph zone on a road with blind curvess and no shoulders. But occasionally a driver somehow thinks "I'm a car, you're a bike, you need to be passed, no matter what the risk." No car has ever passed me going down this road and that's part of safe cycling, though you may think otherwise. There is simply no safe way for me to yield on this dangerous road and I simply don't. Slowing and stopping by me could still lead to a catastrophic accident, so I just don't do it. This might appall some, but it really has never been an issue in the last several years. Mostly cars can not keep up with me down this road. But now let's move this same situation to Heartbreak Hill, the Brighton side. The speed limit is 30mph and I'm doing 28-30mph, but cars more often want to pass me at this speed, because, hey, I'm a bike, they have a car, they need to pass me. Well, that is again an unsafe situation. I can get close to the parallel parked cars on Comm Ave that might open a door into me while I'm going 30mph and allow the impatient car to pass me at 35mph, but that would compromise my safety. I'm obliged to take up the whole lane at 30mph and force that car into moving into oncoming traffic if they want to make that pass that bad. At least this keeps me safe. If they are heading for a head-on collision, I have plenty of room to move right and leave that crash behind me. The point I'm trying to make is that cars should respect a vehicle in front of them going the speed limit whether it be a bike or UPS truck.
A similar assertive posture cyclists need to take is staying 3 feet wide of parallel parked cars, while checking the mirrors and front wheels of these parallel parked cars. I see cyclists screaming down Beacon Street and Comm Ave endangering themselves by passing parallel parked cars by a foot or less. Particularly where there are two lanes going in one direction, cyclists need to take a good portion, if not all of a lane to remain safe. The name of the game is not inviting an unsafe pass by car or truck by being too meek and yielding. If the car behind you would really like to pass you without using their turn signal and making a lane change, too bad for them. There's a second lane, make them use it if it increases your safety.
I guess the bottom line of this now exhaustive dissertation is that cyclists need to own as much of the road as they need to stay safe, while obeying the spirit of traffic laws and motorists need to respect cyclists as vehicles, particularly when they are traveling close to the posted speed limit.
Paul