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

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4
votes
2answers
1k views

What is the braking (stopping) distance for bicycles?

A vehicle driver must keep enough braking distance (aka stopping distance) between him/her and a vehicle in front in order to avoid collision. It depends on the driving speed. What is the braking ...
6
votes
2answers
280 views

How to get back on the road again?

I am from Mumbai, India. And as some of you might be knowing, it is a pretty crazy traffic on roads here. Many times, it so happens that trucks, cars etc. may force you to get off the road while you ...
44
votes
9answers
3k views

Protocol for downhill cyclist overtaking a car?

Last weekend, I was driving (yes in a car, something I rarely do) down a fairly steep and very curvy mountain road (thus with very poor sight lines/visibility ahead) when I noticed a cyclist in my ...
0
votes
1answer
200 views

Cycling fast - and brakes don't work - what to do? [duplicate]

I hope this doesn't occur to any of us, but it can. What must the cyclist do when he/she is cycling (too) fast and needs to stop or slow down immediately, but neither the front and rear brakes work ...
6
votes
2answers
899 views

How much of the saddle rail is suiteable to use

Is it possible to safely set the seat to the max to get the saddle as far forward as it will go. Or should it only be clamped within the marked range 0 to 3.5? I have marked the points in red. The ...
4
votes
2answers
453 views

What is the largest hole a tire can bear before replacement?

Saw this question today. The tire in question has a 2cm long hole on the inside, from a knife. I sometimes get puncture flats from e.g. glass. Never as big as 2cm. Usually if they're less than ...
10
votes
6answers
1k views

How many fingers on the brake lever?

I have seen people stop with one finger, two fingers or the whole hands on the levers. Is there a recommended number of fingers on the brake levers when stopping/anticipating an emergency stop? Do ...
6
votes
3answers
1k views

How can I determine whether rust has made my bike unsafe?

I ride a 1972 steel frame bike year round through Canadian winters. When I got the bike it was in good shape, but after putting a few thousand km worth of commuting on it, it has a lot of scratches ...
8
votes
2answers
242 views

Baby Transportation Safety Statistics

Is there a resource comparing different safety statistics for transporting babies on bicycles, specifically using different methods? I'd like to see some information about how safe it is to compare a ...
3
votes
3answers
281 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?
10
votes
1answer
485 views

Does helmet padding contribute to the safety of a helmet?

Does the padding inside of a bicycle helmet contribute to the overall security of the helmet? I.e. do they cushion a crash in some way, or are they just there for comfort?
2
votes
3answers
363 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 ...
9
votes
1answer
308 views

What is the proper technique for crossing railroad tracks?

I cross railroads as perpendicularly as is possible, but that's all I know to do. Safety is a priority, speed not so much. Specifically: Is there an optimum speed? Should you pedal through them ...
7
votes
7answers
416 views

Should I be wearing sunblock?

I spend the vast majority of my time inside, so I would like to start getting into cycling. I rode up to the beach a couple days ago and got some slight sunburn. I personally don't mind sunburn all ...
13
votes
4answers
793 views

Is complaining to companies about bad driving like howling at the moon?

On my commute in this morning I found myself in another situation where I was in conflict with another road user. (Briefly, a truck and I arrived at a roundabout at a roughly similar time, but I was ...
8
votes
6answers
546 views

Prescription eye glasses and shoulder checks

I've never had prescription glasses but might like some. My left eye doesn't focus easily (I ride on the right side of the road, in Canada). If I look over my left shoulder, I can see behind me only ...
2
votes
1answer
767 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 ...
5
votes
2answers
188 views

Is this rim safe?

The rim has a parting at the join: This is a brand new wheel, and I was wondering if this is a safe one. Could it split at the join?
4
votes
4answers
296 views

Employer Duty of Care for cyclist

The company I work for provides cycle racks for cyclists in a semi underground carpark that is open at one side. Several cycles have been stolen from this area and one colleage was attacked by a bike ...
1
vote
3answers
375 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 ...
7
votes
6answers
355 views

How can I avoid crashes on my urban commute? Tramlines and CBD sections especially

I live in Melbourne, Australia, a city famous for its compact, grid-like CBD (downtown area) and trams. Trams mean tram tracks and hook turns. And compulsory helmets. My daily ride is only 10 km but ...
10
votes
6answers
3k views

Do stickers or paint compromise a helmet?

Would sticking stickers on a helmet or painting them etc make a helmet less useful in a crash? Not knowing the science of helmets but perhaps stickers in the wrong place might make it not behave how ...
29
votes
8answers
782 views

How can I be visible in the dark when I'm signalling a turn?

My bike and I are fairly visible at night--white light in front, red light in the back, bright yellow fenders, reflective tabs and a light on my helmet. I use hand signals to alert motorists when I'm ...
11
votes
8answers
3k views

What's the safest way to turn left from a right-side bike lane?

(United States road configuration and customs here. Sorry, those of you who drive on the left!) On my trip home, I use a bike lane near the right side of a very busy one-way arterial street; there is ...
13
votes
4answers
398 views

Determining if a road is safe to bike on

How do you determine which roads are safe to ride on and which should be avoided? What traffic patterns do you feel comfortable riding in, and which ones set off alarms? What sorts of intersections do ...
5
votes
1answer
788 views

Any experience about radially-laced hub flanges actually breaking?

Most hub manufacturers forbid lacing spokes radially, mostly because there is less material in the radial direction away from a flange hole than in the standard 3-cross, tangential lacing. (UPDATE: ...
10
votes
5answers
666 views

How do you know if you can trust your LBS?

I've visited a lot of bike shops in my time. There have been great ones, and scary ones. One thing I've noticed is that they all seem to have the best intentions. I've never had one deliberately rip ...
18
votes
7answers
1k views

What are some alternatives to fruitlessly ringing my bell at a motorist?

I doubt that motor-vehicle drivers can hear the "ding" sound that a bicycle bell makes. What are some better alternatives?
10
votes
4answers
984 views

Are bicycle helmets repairable or disposable?

Suppose I wear a bicycle helmet, and I fall hard and my helmet cracks. Do I buy a new helmet or can I try repair the old one with some glue?
1
vote
3answers
976 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 ...
4
votes
2answers
349 views

Which brake is most expendable?

I'm thinking of removing a brake(front or back) to reduce weight and simplify my bike. Which brake is most expendable? Its your average fixie road bike.
6
votes
2answers
434 views

Is a headlight required to emit light to the sides?

The California Vehicle Code says: (d) A bicycle operated during darkness upon a highway, a sidewalk where bicycle operation is not prohibited by the local jurisdiction, or a bikeway, as ...
14
votes
6answers
3k views

Night cycling: Is it worth using electroluminescent wire?

It's currently winter in the UK, so for my commete to and from work I need lights and reflective surfaces for safety. I've read about local people losing their lives cycling, so I don want to make ...
3
votes
4answers
532 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?
8
votes
7answers
500 views

Do any bike sharing schemes provide a way to rent or share helmets along with the bikes?

Do any bike sharing schemes provide a way to rent or share helmets along with the bikes, either in a kiosk or through an arrangement with local businesses? None of the schemes that I've used (London, ...
2
votes
3answers
152 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 ...
8
votes
6answers
2k views

Is standing up and peddling on multi-gear bicycles a bad idea

After reading While pedaling standing up, bike crank gives in as if shifting, what is causing this? , I was thinking well for starters one should probably not be standing up to pedal under normal ...
7
votes
5answers
2k views

How do you shift your weight when leaning on a turn?

When I turn I usually shift my weight on the same side I'm turning to. To ease the discussion let's assume we are turning left, on a paved road (no mud/gravel/potholes/grease/oil/ice/door traps). I ...
6
votes
3answers
235 views

Does a three foot passing law actually require drivers to give three feet?

Utah has a three foot passing law that states: Title 41 Chapter 6a Section 706.5 Operation of motor vehicle near bicycle prohibited. An operator of a motor vehicle may not knowingly, ...
5
votes
2answers
956 views

Can a steel fork be unbent?

I was hit by a car and now the steerer of my Reynolds 753 aero fork is bent. Is it possible to bend them back? Would that be safe? I can't afford a new pair!
20
votes
5answers
2k views

Which states or countries have stop-sign-as-yield laws for bicyclists (Idaho stop law)?

In Idaho (PDF), bicyclists are allowed to treat stop signs as yields, and red lights as stop signs (essentially; see the actual law for details). This seems like a very reasonable approach, balancing ...
4
votes
7answers
424 views

Need a bright headlight for offroad, UK

As winter approaches I am looking to upgrade my cycle lights. My commute takes me on an unlit section of canal tow path so I am looking for suggestions of a super bright headlight or cycle light that ...
8
votes
7answers
712 views

As recumbents are low to the ground and hard to see, how to you use one safely on a normal road?

My wife thinks that she can't use a recumbent on the roads, as a car driver will not be able to see it. What’s the solution?
11
votes
3answers
1k views

Is it safe to ride on an unevenly bulging tyre?

Most of the tyre looks fine, true and straight but the section photographed shows bulging. The rim itself is true, is this safe to ride on?
1
vote
4answers
1k 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 ...
-4
votes
5answers
2k views

Is it safe to Cycle with an Umbrella?

Is it safe to cycle while holding an Umbrella? Obviously it's at least a little less safe than biking without holding something in your left (or right) hand. But how much more dangerous is it? ...
12
votes
4answers
2k views

Is it legal to pass a car on the right when that car is turning?

So I've been poring over the bikes SE, and as a recreational biker and an automobile commuter, I'm naturally most interested in topics addressing how bikes interact with automotive traffic. In one ...
20
votes
8answers
3k views

Arguments for/against bike lanes?

What are the arguments for and against bike lanes? Can anyone summarize the best reasons they're good for and bad for cyclists and automobile drivers? For example, Are there some environments ...
19
votes
5answers
2k views

How should a bicycle helmet fit?

I see enough folks wearing helmets in such a manner that they might as well not be. What is the proper way to fit & wear a bicycle helmet?
6
votes
1answer
372 views

Is it safe to ride with one missing chainring bolt?

I have a double chainring on my road bike but one of my chainring bolts has broken so I'm left with only 4 out of the 5 I'm supposed to have. Is it safe to ride? (just until replacements arrive)