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57

I found this article which has some statistics on accidents involving wrong-way cycling: Table 4 shows that all categories of bicyclists traveling against the direction of traffic flow are at greatly increased risk for accidents—on average 3.6 times the risk of those traveling with traffic, and as high as 6.6 times for those 17 and under. This result ...


52

For one thing, if you cycle with traffic the closing speed between car and bike is the DIFFERENCE in speed between the two. If you're doing 20mph and the car is doing 45, the closing speed is 25. Reverse it and the closing speed is 65 -- over twice as fast. This affects the time the driver has to react to the cyclist's presence -- over twice as much time ...


50

Some bicyclists do wear full-face helmets; in particular, downhill mountain bikers and BMXers will frequently wear full-face helmets, as the chance of a crash causing you to land on your face is greater. The problem with full-face helmets is that they're hotter; your head is great for getting rid of excess heat, and the full-face helmet helps trap more of ...


45

Rank, Folke and Jespersen (2001), "Differences in cyclists and car drivers exposure to air pollution from traffic in the city of Copenhagen", The Science of The Total Environment, 279:131-136 teams of two cyclists and two car drivers in two cars were equipped with personal air samplers while driving for 4 hours on 2 different days in the morning traffic ...


38

Helmets should be replaced roughly every 5 years and after any crash where your head makes contact with the ground. Helmets will crumble, compress or otherwise deform in sometimes hard to see ways when you hit the deck. The structural integrity of the thing will be massively diminished after even a relatively tame fall. This is one area where you don't want ...


37

The short answer is that 'safer' is subjective and depends on your requirements. You are both correct. Movement attracts the eye, so your blinking light is noticed. It is easier to judge the position of a steady state light. For a motorist to pick out your tail light, particularly, from a sea of noise is very difficult. The surface area of the light is ...


35

BMXers in some places put the shoe between rear tire and frame, just where the rear brake normally is attached to the bike. I've never done that, because I used to run knobby tires (ouch!), and nowadays I care a lot about brakes. You really should avoid this situation, because many times there would not be much to do. I would guess, a good alternative ...


31

It is worth noting that deaf people cycle perfectly well. @Joe's excellent comment merit's adding into the answer... Edit It should also be noted that deaf people are used to being deaf. They never rely on sounds like hearing-abled people do. Its OK to listen to music as long as a) you are aware that you don't have any audio clues to hazards b) don't ...


27

Bicycle helmets contain crushable foam that works to extend the duration of impact by about 6 ms (milliseconds). This doesn't make the impact force disappear, instead it extends the duration of force experienced by the brain. By extending the duration, you reduce the peak force. The brain can withstand impacts to some degree, however if the impact is too ...


27

To be honest, I think you handled the situation pretty well as it was. You've got to get yourself to the bottom of the mountain safely and even in locales which have laws about deliberately impeding following road users you will have to allow people to pass in a manner safe for you, this isn't necessarily going to be immediately. Seems to me that this ...


26

Bicycle mirrors are going fall into two basic categories- the type that you mount somewhere on your bike and the type that you mount somewhere on your head. Both categories have their pros and cons, but many of them are subjective. A pro to one individual may be considered a con to the next. Within those two categories you have a variety of different options ...


25

AGAINST One of my primary issues with bike lanes is that motorists tend to think that you have to stay in that lane. So when you have to move right because of debris, garbage cans or parked cars in the lane it further annoys ill-informed drivers. Additionally, drivers come to expect you to be out of traffic, riding on the shoulder, and will squeeze by you ...


25

This is not an either-or proposition. Your bike is hitting the bumps and supporting your full weight (minus the very small proportion of weight that might be falling at that exact moment) regardless of how you stand when you hit the bumps. The difference is whether you're going to let the additional damping effects of the down tube, seat tube, bottom ...


24

Get a Bright Bike kit from brightthread.com: Bright Bike DIY kits cover your bicycle in easy-to-apply design-savvy ultra reflective vinyl for safety. It is like covering your bike with a big stickers that turn ultra-bright in headlights. The retroreflective vinyl is the same material used on the backs of running shoes, but with colors. The kits greatly ...


24

Only cross if you are walking and pushing your bike. If you are riding, you are a vehicle and generally you are required to obey all traffic control devices in the same way any other vehicle operator is. There are exceptions, like the Idaho Yield laws, but generally you have to behave like a car. The other thing to think about is that the more you behave ...


23

Exposure while cycling is generally no worse than being in a vehicle. In fact can be better depending on the weather and the amount of solvents in the plastic of your car. You do experience more when cycling heavily - simply because you breath more - but general medical evidence is that the benefits of increased fitness greatly outweigh any problems. The ...


23

The key thing, is that you never want to be to the right of cars that are turning right. Depending on the exact lane setup and traffic amounts, I would do one of these: Merge left into the go-straight (left) lane, so that anybody turning right is in a separate lane to the right of me. Be in the center or left third of the right-turn lane, so that anybody ...


22

My opinion: I don't believe you can effectively draft and have enough time to stop. I don't know the exact aerodynamics (and I suspect it's affected by speed and wind), but if you watch any paceline or peleton, they're never more than a couple feet (about half a meter) behind the rider in front, often only a few inches (centimeters) behind. With a ...


22

The Bicycle Safety Institute disagrees with the 2-3 year rule. They have a good page on replacing helmets. I usually replace one when the foam rubber gets old and crumbly, when the adjustments quit working, or when I damage it. UV can deteriorate the plastic if you leave it outside a lot. And, if you ever "use" a helmet, i.e., crash and save your skull with ...


22

Keep your front brake. It does the most work, it will stop you much faster than your rear brake ever could hope to. Take a look at a motorcycle, the front brakes are always much larger than the rear. Whenever you brake, on a bicycle, motorcycle, in a car, more weight is transfered to the front wheels, so the front tire has more traction to stop you with. ...


21

The Highway Code comes in handy with this question... In London drivers of all buses are exceptionally well trained and likely to be highly experienced. They know every part of their route and have 'dealt with' plenty of cyclists before. They will always indicate when they are pulling over and indicate again when they are going to pull out. It is highly ...


21

The short answer is that, in practical terms, the difference isn't great. The longer answer requires some explanation of "visual conspicuity." In optical engineering, conspicuity is the study of what makes things "conspicuous," and some researchers split the tasks into "detection" and "identification" (see, for example, the works of A. Toet et al, such as ...


21

Well, regarding the question asked: "why is it safer etc." let's go: (already mentioned) The closing speed between a car coming from behind is much slower. He has more time to see you before overtaking, and if you need to cross, you can signal your turn, so he can slow down for you to pass; By the same reasons, you can flow with traffic, take the lane, ...


21

If I see a significant bump coming (on my touring bike -- no suspension), or just a stretch of fairly rough pavement, I'll generally raise my bum a few inches off the seat and flex my arms, so that my legs and arms are the "springs". This in not only more pleasant than taking the hard bumps, it also helps the bike maintain contact with the road, reducing ...


20

For safety reasons I prefer to be behind them. That way I can position myself on the road slightly further out then they are. This forces any overtaking vehicles to negotiate past me first and makes them provide a little more breathing space for my child in front. It certainly seems to prevent them trying to squeeze past.


20

Terminology is important here. Pedal Clips (refer here) are straps that tighten around the shoe. Clipless, such as SPD have a cleat - refer here Toe clips are not common these days - but still used by some (touring and fixed hub bikes) more niche applications. I assume you are talking about SPD style clipless pedals, but the following discussion does not ...


19

Try not hugging the edge of the road, drivers will be more tempted to squeeze past through smaller gaps if you're right at the edge. Instead ride about 1/4 of the way across the lane, it might p*** off a few drivers, but it will make them think twice about squeezing past with overtaking traffic / parked cars / etc.


19

In the city, it's best to "take the lane" and behave like traffic. However, on country roads, I prefer to do the following. When you hear/notice a car approaching, weave out about a meter into the road, then weave back. Repeat this a couple times, until the car is very close, then just hold your line on the edge of the road. The car will worry that you ...


18

I should imagine you should be looking for some reflective gloves. Or even some glo gloves Check these out as an example ... http://lifehacker.com/395978/glo-gloves-reflective-cycling-gear Also using a good reflective jacket that has good reflective strips down the arms is useful.


18

What brands do they stock? As well as relationships with customers shops have to have relationships with suppliers. You will find that dealerships are not dished out so easily and only the best bike shops can have the best brands. This is for bikes and for components. A brand to look for is Specialized, does the shop have Specialized components? Customers ...



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