Riding safely, safety equipment, and safe places to ride.

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4
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1answer
172 views

How does the risk of a cyclist colliding with a vehicle vary with the speed difference?

In a recent answer I asserted Statistics show that the probability of a collision rises rapidly after the speed difference between two road users exceeds 20 kph (12 mph). So choose paths without ...
3
votes
5answers
850 views

Is riding shirtless safe?

During the summer, I like to go for rides on trails without a shirt. Is this safe? Also, related: is it rude to other people on the trail not to wear a shirt?
3
votes
7answers
1k views

Is it possible to get a light that is too bright?

This question is related to this recent question: Best ways to avoid getting hit by cars? I have a 750 lumens front head light - it's bright! Some of my riding buddies say it is too bright for the ...
3
votes
6answers
1k views

Does exercising solely through cycling cause injuries?

I get most of my exercise through cycling. Does cycling without cross-training cause injuries? If so, are there specific injuries to which cyclists are susceptible (knee, hip, etc.), and is it ...
3
votes
4answers
1k views

How to determine if a decline is too steep for safety?

I often find myself confronted by a steep and bumpy bit of hill on the trail, or one or two steps on the path, and end up with three possible results: A) ride down with no trouble (usually) B) step ...
3
votes
3answers
642 views

What's this part of the bike, and is it safe to alter it?

The video shows someone installing a gps bike tracker, however there is not much room in the top of the head tube, so he hammers down what's already in there in order to make room for the tracker. In ...
3
votes
3answers
106 views

When should I replace the brake cable?

Here is the picture of the cable from my rear V-brakes: As you can see it's worn down. Should I replace it now or is it safe to use it for some more time?
3
votes
2answers
2k views

Can a guy wear a woman's helmet safely?

I'm a guy and since I started wearing a helmet for mostly Trail Riding and occasionally for commuting, I noticed that the helmet looks really large on my head. My doctor later confirmed with a tape ...
3
votes
3answers
5k views

What does a flashing yellow arrow traffic signal mean?

While bike commuting in an urban setting, I've started noticing that some intersections have flashing yellow turn signals during part of the light cycle. What does this mean? If I am on my bike in the ...
3
votes
4answers
1k views

What statutes govern the directing of traffic by citizens in Massachusetts?

Are there laws or statutes governing the directing of traffic by citizens or "members of the public"? A scenario I often encounter is one in which someone — typically another rider or pedestrian in a ...
3
votes
2answers
244 views

Safety comparison, downhill mountain bike vs. downhill ski

My twelve-year-old recently tried downhill mountain biking when we were in Lake Placid. He found it thrilling and would like to continue with this new sport now that we are back home. I am hesitant ...
3
votes
2answers
456 views

Speed wobble safe fall?

What's the best downhill safe fall if you're getting a lot of speed wobble, or you're on a really rocky course and lose control? I noticed a lot of people try to slide the bike down to its side, but ...
3
votes
2answers
323 views

Front tire skidding, resulted in a crash, any advice?

I have been cycling my whole life, and for about a year I have been doing 25km a day, without any problems. I got new Vittoria Rubino 23s tires a few weeks ago and I had no problems for 3 weeks since, ...
3
votes
2answers
421 views

What speed of wind gust will cause a cyclist to swerve by 1m or more?

Today's weather forecast for London predicts gusts of 45mph. While there are many factors in determining whether its safe to ride, the possibility of getting blown into oncoming traffic rules out a ...
3
votes
3answers
221 views

Which is the safest side to place a foldable rack-attaching bike basket?

I recently received a foldable bike basket which attaches to my back rack as a gift, which I am really excited about - it will make my commute a lot easier. However, I am not sure which side of the ...
3
votes
5answers
312 views

Dealing with homicidal drivers

I do a 35km return commute into a big city. Almost daily, someone tries to run me over. Just in the past month I've experienced the following: I filter to the front of the traffic, wait at the ...
3
votes
1answer
142 views

bicycle pedal design specifications for threads

Where can I get information on the various different types of threads used in bike pedals as each manufacture has its own specifications? Different manufactures of pedals have different threads and I ...
3
votes
3answers
713 views

Replacing a chainring - what did I do wrong?

TL;DR I thought I could figure out repairs myself but clearly I'm a moron. I replaced the chain and chainring on my fixie last Saturday, and this morning it got scary loose on me. I started to feel ...
3
votes
1answer
170 views

Can the extreme heat from powder coating influence frame integrity of older bikes?

I just got an older frame powder coated. The shop that I took it to doesn't specialize in bikes. They mainly do industrial grade powder coating and perhaps a car wheel here and there, so I wouldn't ...
3
votes
5answers
1k views

Which footwear is the safest for summer cycling?

This morning I could not find my training shoes. So, I used my sandals. I found that the sandals not only kept my feet cool but there was no pedal slippage as I had expected. The more I think about ...
3
votes
3answers
448 views

Which is the most stringent bicycle helmet certification?

There are numerous safety standards for bicycle helmets available, but which certification is the most stringent one in terms of safety?
3
votes
1answer
345 views

How to practice jumping over cars with disc brakes and SPD shoes?

This question here raises a sub-question, to avoid accidents. I am looking for some safe ways to practice jumping over cars. I use SPD shoes and disc brakes because I have noticed that I can burst ...
3
votes
1answer
180 views

Figures on accidents involving cyclists where motorists are using cell/mobile phones

I am trying to get hold of some figures for accident rates where either, ideally just cyclists or, just general road users & pedestrians, are involved in accidents (or reported near misses) ...
3
votes
1answer
195 views

Safe countries for touring (without having to take public trasport all the time) in EU? [closed]

I discussed today foreign ambulance guys and they told stories about sliced bicyclists in an ex-communist country. The country in itself is not special but rather the fact that it lacks proper roads ...
2
votes
2answers
417 views

Wheel spokes missing

I have 5 spokes missing. Is it OK to ride on it, and how long will it last, or will my wheel just break on me? I will be going to work on it every day.
2
votes
4answers
581 views

Is it practical to wear motorcycle half helmet for road cycling?

I am considering buying a motorcycle half helmet for cycling. I ride road bike for leisure. I would ride alongside with traffics quite often. First of all, I am looking for more protection. I am ...
2
votes
3answers
514 views

Bicycle lights- Indicating in the dark

I am a product designer and am currently working on a bicycle lighting project and would really appreciate your valuable feedback. In England, turning left on a bicycle is not really a problem as ...
2
votes
4answers
2k views

Is it safe to ride with bent fork?

My bicycle went from this when I bought it: To this when I crashed (note the front fork bent where it attaches to the stem; front wheel almost touches the down tube): Update: Just looked at the ...
2
votes
3answers
291 views

Is it safe to go over roots at high speed on a cross-country bicyle?

I have an average cross-country bike (Cube AIM), with stock parts on it. I have no problems descending at high speeds on a rocky road/singletrack. But when I have a long, steep descend with big ...
2
votes
2answers
221 views

Safety check for a used bike

I'm a poor student and I bought a used bike. I don't have experience with bikes and I want to make sure that the bike is safe for me because actually I found the bike in a garbage container and the ...
2
votes
4answers
196 views

Safe and proper (or vice versa) left turn in traffic

I'm new to commuting in traffic, and I realized immediately that the left turn (US traffic rules, right turn in UK) in an intersection with a traffic light is just dangerous. My basic questions are: ...
2
votes
3answers
496 views

What is the correct way to put a helmet on?

I hear often claims similar to "many cyclists wear their helmets the wrong way" and "wearing a helmet incorrectly significantly reduces it's protective ability". My helmet is similar to the following ...
2
votes
3answers
219 views

“wound” on the tire side

The other day I was stopped at a traffic light when I felt my bike moving slowly forward. Did not pay really attention, thought there was a slight slope, so hit the brake and voila. But it did not ...
2
votes
4answers
146 views

I want to ride a bike, but its dangerous for me to have weight on my arms

I ride about 6 miles a day to work and back. I would like to ride more, but because of a bum shoulder I am increasingly getting into dangerous situations and I want to give up riding. I have a Giant ...
2
votes
4answers
221 views

Are there any permanent solutions for holes smaller than 1cm on outer tyre?

My road bike tire is damaged because of some biketrap I fell into. After a month I got a flat while riding. I found this hole at the damaged area while repairing the puncture on inner tube. After ...
2
votes
2answers
1k views

Helmet Safety Standards Canada

I am looking at buying a helmet meeting ASTM F 2040, CPSC and EN 1078 safty requirements. Are these reasonable standards and will they protect my head in an axcident? Are these standards recognised ...
2
votes
3answers
242 views

best tires for Cannondale Bad Boy 4

I'm just getting into biking and last week I just purchased a Cannondale Bad Boy 4 from REI. They still have it in the shop as I'm in the processing of moving and they agreed to hold onto it for me. ...
2
votes
1answer
349 views

Do 16g CO2 cartridges have a shelf life?

I mainly use my road bike during the triathlon season and now that the season is coming back around again, I am finding some old, unused CO2 cartridges from last season (fall). I typically use 16 ...
2
votes
3answers
307 views

Safe saddles for men's health

As a continuation to Why is it important to have good saddles? I would like to know: Are there non-expensive saddles that are safe for men's health that you can advise. A slightly different question, ...
2
votes
1answer
87 views

What should I check with set up of a tandem?

Particularly with reference to hired tandems, or when you're first setting one up. A bit of context: I hired a tandem today and went for a ride with my wife. I've been riding for about 20 years, she ...
2
votes
1answer
150 views

What's the best way to secure helmet straps?

On every helmet I've worn there is always some extra length to the straps that run through the buckle that secures the helmet to ones head. Most helmet's these days come with one or two small rubber ...
2
votes
2answers
67 views

French handlebar fit

I have an Atax stem ('85 Peugeot). Original steel handlebars are 25 mm. Is it prudent to spread the stem to accommodate Nitto 25.4 randonneur bars?
2
votes
1answer
1k views

How does one test the freewheel?

What are the failure modes (symptoms) of a failing or failed freewheel? My understanding of normal free wheeling means the rear tire should rotate when the bike is moving and the pedals are or are ...
2
votes
4answers
183 views

Looking for an old fashioned bicycle with coaster brakes & hand brakes for a woman

I am looking for an old fashioned style bicycle. I had a bad accident on a new bicycle and I feel safer with with an old-style bike. I've never crashed before and I've been riding bicycles for over 40 ...
1
vote
1answer
199 views

Safest position to ride on roads with cars

What is a hard and fast rule on where to ride within a lane, if one exists at all? I've heard people say that you should ride as far over as you can while avoiding drains, potholes, small children ...
1
vote
4answers
339 views

Thinking of quitting due to dangerous driving [closed]

I used to cycle a lot, and decided to try taking it back up after last year's Olympics. But it feels like almost every time I try to go out for a ride I nearly get taken out by someone passing far ...
1
vote
3answers
813 views

Legality of opening someone else's car door?

This is in the context of having just been involved in a near miss with the car. And only applies at traffic lights whereby the car is stationary very soon after the near miss. So, generally the near ...
1
vote
2answers
175 views

Sun protective clothing interfering with bike mirror

I have had a "third eye" type bike mirror on my helmet for years. However, recently I have learned of some genetic predisposition to certain types of skin cancer which affect the skin on the ...
1
vote
4answers
2k views

Feedback on Bern Helmets for winter

I was thinking about picking up a new helmet this afternoon. My current helmet: Has had a few accidents Isn't very warm in the winter. Doesn't have great clearance for ski goggles. I was ...
1
vote
1answer
94 views

Rear wheel constant bump

my rear wheel has a constant bump whenever I ride . I've done all that came to mind at firs. Deflated and checked the tire , checked the axel for bends , checked the ball bearings , made shure the ...