Questions tagged [safety]

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

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votes
0answers
76 views

Void in carbon frame seat tube, is it dangerous?

While assembling a carbon bike, I found this void in its seat tube. It's about 1/2 inch X 1/4 inch in size and I'm guessing almost a third to half the depth of the tube wall. Since it's right next ...
3
votes
1answer
59 views

Lifespan of a bike child seat

I know that e.g. bike helmets and child car seat expires, but can't find anything about bike child seats. There is a manufacture date on mine (Dec. 2014) and it's made of polypropylene (there is this ...
5
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3answers
2k views

Signal a u-turn to road users

I am living in the UK and in this situation (sorry for my bad drawing): The bike (the dot in front) wants to do a u-turn and needs to signal to the car (the dot behind). If the bike does not signal, ...
6
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1answer
2k views

Child sleeping in bike trailer

My husband and I like to take our 3.5 year old daughter for bike rides and she rides in a trailer. But the problem is that she is sitting idly on a calm, mostly smooth ride on a bike path surrounded ...
-2
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3answers
90 views

What are the hazards and risks if I keep using a worn rear tyre?

I found similar questions: What are the risks of fenders/mudguards? What are the risks of untrued wheels? But I haven't found a structured analysis on the subject of tyres. Stack exchange ...
1
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1answer
119 views

My tyre has hollow knobs, is it normal/desirable/essential for maker to disclose?

I noticed my back tyre has hollow knobs and I can't remember ever seeing this before. Some of the knobs have turned out to be hollow inside. I know YGWYPF, my questions are: Is it normal? I got no ...
17
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8answers
5k views

Is cycling behind a truck a bad practice?

Sometimes on a highway outside my city, Nairobi, I have been passed by fellow cyclist cycling behind trucks. As much as it is similar to holding onto the back of the track this is different since you ...
17
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11answers
10k views

How (un)safe is it to ride barefoot?

Sometimes I use bike for a week long trip camping along, doing maybe 200km per day riding on asphalt road. In the end, my feet have bad smell, which is not super strange or concerning, but it does ...
10
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7answers
867 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
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2answers
122 views

Should “universal pedals” be avoided?

Are universal pedal axles weaker than standard axles? If so, should they be avoided? These are inexpensive pedals so let's focus on inexpensive normal, solid axles vs these universal pedals. Each ...
26
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11answers
2k views

Safely overtaking pedestrians

When riding on bike paths or mixed-use paths, there are usually pedestrians walking along them as well. Pedestrians tend to be somewhat unpredictable; they may suddenly turn around or step to the side....
11
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4answers
4k views

We offer our riders shared helmets. What sanitizing spray or barrier product can we provide alongside the helmets?

We are lucky enough to have four shared bikes at work, which are available for any employee to ride. Due to New Zealand's compulsory helmet laws, we must provide some shared helmets. Some people don'...
11
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6answers
18k views

What are the advantages of filling tires with Nitrogen instead of air?

I am completely new to riding bikes and know that are usually filled with air but nowadays some people fill them with Nitrogen instead. I don't know why they prefer to fill their tires with nitrogen ...
13
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12answers
3k views

Bag for holding valuables on bike while parked?

I ride regularly in the city with my a few valuables with me. My purse, phone, keys, company ID card etc. I hate having a bag on me while ride so I am looking for a solution to have these few items in ...
2
votes
1answer
163 views

Can I use reflective tape instead of a rear reflector in the UK?

My road bike isn't fitted with a rear reflector as I got it second hand and I think they removed it. If I purchased some red reflective tape and fitted it around the seatpost/seatstay, would this make ...
22
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11answers
8k views

Bicycle designed for one-arm usage?

I badly fractured my shoulder in a car accident and have limited mobility in my right arm after the repair. Is there a way for me to safely bicycle on city streets with one arm? Can I modify my ...
26
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8answers
4k 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 ...
14
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8answers
7k views

Can I avoid falling in the rain on a corner?

I was riding in the rain a few months ago and fell turning a 90° corner. Here are the details: Riding on a road bike with new 25mm smooth tires inflated to 100 psi (Cannondale Synapse with ...
4
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2answers
199 views

When carrying a lock on body, which statistical data and experiences to consider re: safety concerns

With a custom-built bike in somewhat higher price regions, I now ended up with a high-security u-lock, which is also very heavy-weight. I also own a heavy-weight chain lock. For several reasons and ...
58
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15answers
31k views

Why don't cyclists wear all-encompassing motorcycle-style helmets?

It is possible to get a helmet that covers your entire head and face, and in theory would protect you against more kinds of falls. In particular, Why don't bicyclists wear them, and why do ...
21
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3answers
6k views

How dangerous are my worn rims?

I took my bike for a service recently and was told it needed so many repairs that it was more cost effective for me to replace it. One of the repair jobs was to replace the wheels due to worn rims. ...
9
votes
3answers
18k views

Is it safe to ride on a cracked rim?

Doing my monthly inspection & clean of my wheels last night and I was shocked to see a crack around one the spokes as they enter rim. It is a rear wheel (Shimano R600 I think). I had obviously ...
18
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11answers
22k views

Is there such a thing as frame failure?

Several general questions have been asked regarding how long a bike or bike frame will "last", and the gist of answers seems to be that a bike can last quite a while if the replaceable components are ...
4
votes
1answer
176 views

What's the purpose of the Weeride Copilot “safety” tabs?

I just bought a used WeeRide Co-Pilot bike trailer. It's pretty good except for one little feature(?) These tabs stick out on the side, and I'm assuming they're safety tabs to help you not run over ...
3
votes
1answer
128 views

Back wheel jumping out of rear dropout with child transporter

Some days ago, I was riding my bike towing a child transporter. I was going steep uphill and put quite some force on the pedal. Suddenly, I heard a loud snapping sound and the back wheel was blocked. ...
5
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2answers
3k 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 ...
1
vote
1answer
309 views

Are there safety differences in helmets with ce marking?

I am considering to buy a helmet for everyday use in Munich (Germany). Most of the time, I will wear it when I go to work. I go to work at any weather. I want to have a helmet which has a light in ...
5
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7answers
3k views

How to handle motorists' dangerous behaviour with an impassable group?

I rode in a Velowagen (1) with over 300 cyclists on the national bike route in Switzerland, while on a narrow countryside road a few cars began piling behind us and one of them started trying to pass ...
8
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4answers
562 views

Motorists misjudge bicycle speed

This question is probably a little too location-specific but I hope it attracts some good answers Okay, here we go... Most cities in India do not have dedicated paths/lanes for bicycles We are ...
9
votes
2answers
5k views

Max weight of child, for rear bike seats - why is it always (seemingly) 22kg?

I had a rear child's bike seat on my old bike (which was stolen, boo hoo). It was a Yepp Maxi and was the kind that sits on a rack, rather than being mounted to the seat post. The maximum weight ...
2
votes
2answers
653 views

I nicked the tip of the taper on a bottom bracket spindle. Is it still safe?

I had to cut the crank arms off of a bike I'm working on. Used an angle grinder. Despite my efforts to avoid damaging the bottom bracket spindle, I nicked it in three places, all at the tip. The ...
18
votes
9answers
3k views

Is it really safer to ride in the road than on the sidewalk?

I am fairly new to riding, in a city where it is legal to ride in the road or on the sidewalk. In the areas where I need to ride, the roads are busy but the sidewalks are virtually deserted. I keep ...
3
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5answers
568 views

How to deal with anxiety caused by dangerous riding conditions stemming from poor lane design and inconsiderate fellow road users? [closed]

Location is Belgium. I stopped seriously riding my bike about 5 years ago. At the time, I used my bike for commuting to work for about 9 km one way. The main reason I stopped was because the timing ...
1
vote
0answers
81 views

Groups overtaking groups: how to communicate for safety?

I have just been back from a biking vacation with another fellow cyclist, and we have met a lot of other cyclists: from the most serious ones to those taking the bike once every eon. When we had to ...
4
votes
1answer
1k views

How to repair pedal snapped off crank arm? [closed]

The pedal axle snapped just where it enters the crank arm. This left the threaded portion of the pedal axle in the crank arm hole. How do I remove this to replace the pedal?
11
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6answers
3k views

What's the lowest safe cadence on a climb?

I recently installed a power meter and just used it to get up some rather steep 15%+ climbs. At my weight and lowest gearing (34f 30r) at a sustainable power level for my fitness (225w) this ...
3
votes
1answer
106 views

Are high racers safer due to enhanced visibility compared to low racers or classic recumbents?

Naively, I would expect that a high racer is safer in traffic than a low racer. With the rider higher up, she or he should be more visible compared to being closer to the ground. Considering that ...
6
votes
3answers
1k views

What is the drag / power lost to a safety flag?

I have a recumbent bike that has a safety flag on the top of a thin pole, so it flutters around higher than and after my head. How much power am I losing to this flag that could be used to power my ...
24
votes
6answers
51k views

What are the risks of untrued wheels?

I understand that wheels should be trued for efficiency. Are there any safety risks (or risk of damaging the bike) in using untrued wheels? Are the risks different between wheels untrued left-right ...
1
vote
4answers
258 views

Can this frame be used or is it done?

I have a cheap mens Huffy mountain bike which I noticed has 2 holes in the frame. Would this be too unsafe to ride?
3
votes
2answers
169 views

Influence of tire breadth on cornering

Due to a bike replacement, I recently started using 700x40C tires, after several years of using 700x35C or 700x28C. Whenever I corner, I have the impression the bike is behaving differently than what ...
7
votes
6answers
2k views

Is cycling with crystal sunglasses dangerous?

I'm a commuter cyclist. I have a pair of Persol sunglasses with leaded crystal lenses. Do y'all think this is dangerous in case of an accident? I have terrible thoughts of wrecking and glass shards ...
23
votes
4answers
7k views

Does it make you safer to use lights during the day?

My bike light, the Cygolite Metro 360, has a "Daylighting" mode which flashes very brightly and is intended to be used during the day. Similarly, many tail lights have flashing modes. Obviously one ...
8
votes
2answers
298 views

Can I ride side by side with another cyclist in Switzerland?

When I ride on the road with someone (in the country), I try to ride on his side, and then when a car comes, I pull back in. This way, we can talk and have more fun during the trip. Sometimes, I don'...
3
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5answers
337 views

How to recognize a bad tire?

The most expensive "consumable" while operating a bicycle would probably be tires. Enthusiasts endlessly debate the relative merits of different sizes, profiles, tread patterns,inflation pressures ...
2
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5answers
3k views

What can cause the front wheel to lock up when going over a small bump?

I was going over a bump. When the front wheel hit the bump, it suddenly stopped moving, the rear wheel lifted off the ground, and I was thrown face-first onto the road. I sustained injuries to the ...
23
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7answers
9k views

How can I offer a test ride while selling a bike?

I am selling a bike to someone I don't know from Craigslist. I expect that the prospective purchaser will want to test ride the bike before making the purchase. How can I prevent them from riding ...
2
votes
2answers
319 views

Help please - Dent in top tube of double butted aluminium frame

I have a ridgeback velocity which is labled as double butted aluminium. Around the middle of the toptube is a dent shown in the photo. There is also a short line above it which I can feel with my nail....
18
votes
5answers
10k views

Child seat: how to keep the child's head from falling forward?

When my child falls asleep in the child seat, his head falls forward. How can I keep his head back? The child seat is a modern type with a back that can be tilted back to prevent that. It works, but ...
5
votes
2answers
270 views

Riding with a Gates belt past its due replacement mileage: can it snap or other risks?

I just purchased a belt drive bike (Gates CD). Maintenance free, according to the BS and what I have read online. The only attention is to replace it every 5000 km. Since I usually ride around 8000 ...

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