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Questions tagged [safety]

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

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3 answers
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What to look for in bone conduction headphones for bike voice navigation?

I am getting lost. Easily. And looking too hard at the screen (phone mounted on the handlebars) makes me lose concentration. Luckily, Komoot I'm trying now, and Google Maps, provide voice navigation. ...
Mołot's user avatar
  • 1,116
2 votes
0 answers
152 views

Does a standard exist for race boundaries?

I'm a bit puzzled at what happened at the end of Stage 11 at the 2020 Tour de France (on Wednesday 9 September 2020). For the record, I'm not defending Peter Sagan. His leaning is aggressive. I'm also ...
Sam7919's user avatar
  • 9,268
5 votes
2 answers
505 views

Do high and narrow seat and back bending provide good bike riding posture?

I would like to ride a bike as part of daily commute on roads someday, as I rode a bike to school in another country in the past. But I have been bothered by some uncomfortable points from the bikes ...
Tim's user avatar
  • 151
5 votes
1 answer
1k views

How to make sure that the brake cable anchor bolt properly holds the cable?

I am referring to the bolt, in the V-brake, that holds the cable on the opposite side of the noodle (as in this question). Yesterday I loosened that bolt to take the wheel off (I learned later that ...
Attilio's user avatar
  • 563
2 votes
1 answer
150 views

Safety of separated bike lanes in less dense areas

I've read it's safer to ride a bike on the street than the sidewalk. It's been covered on this site: Is it really safer to ride in the road than on the sidewalk? Also, Redit has a good list of ...
Phil Frost's user avatar
8 votes
1 answer
298 views

Any reason for non-continuous mountain road barrier?

I have been cycling recently in Polish mountains and when riding through one of less occupied mountain roads, I have found many places where road barrier (that is suppose to secure bikers and car ...
trejder's user avatar
  • 544
52 votes
12 answers
7k views

How can I make it clear to other road users that I'm an inexperienced cyclist?

I'm in my mid-20s and I'm currently learning to bike, on my own, as I don't have anyone to teach me. My goal is to be able to commute to work when I want to, be able to travel to nearby towns, and ...
Jenayah's user avatar
  • 609
4 votes
2 answers
278 views

Is this a helmet defect or not?

I bought a new Giro Savant helmet online and, after unboxing, noticed that the EPS foam seemed to be quite jagged and uneven at the intersection with the dial system (see photos below). This does not ...
ThymeTravel's user avatar
4 votes
2 answers
545 views

Void in carbon frame seat tube, is it dangerous? [closed]

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 ...
Dhiraj Bokde's user avatar
3 votes
1 answer
1k 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 ...
Clément's user avatar
  • 231
5 votes
3 answers
3k 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, ...
user avatar
3 votes
5 answers
2k 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 ...
pateksan's user avatar
  • 2,364
1 vote
1 answer
153 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 ...
pateksan's user avatar
  • 2,364
16 votes
8 answers
6k 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 ...
Jack Siro's user avatar
  • 315
2 votes
2 answers
156 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 ...
David D's user avatar
  • 22k
13 votes
12 answers
5k 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 ...
jtamaska's user avatar
  • 139
2 votes
1 answer
1k 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 ...
Noah P's user avatar
  • 137
4 votes
2 answers
239 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 ...
StefG's user avatar
  • 696
17 votes
8 answers
9k 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 ...
Chris Schiffhauer's user avatar
4 votes
2 answers
607 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 ...
Wayne Werner's user avatar
3 votes
1 answer
336 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. ...
Snijderfrey's user avatar
1 vote
1 answer
1k 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 ...
Martin Thoma's user avatar
6 votes
7 answers
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 ...
bookman B.'s user avatar
20 votes
3 answers
11k 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. ...
Bob Tway's user avatar
  • 691
2 votes
2 answers
735 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 ...
Fing Lixon's user avatar
3 votes
5 answers
646 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 ...
Nzall's user avatar
  • 437
1 vote
0 answers
90 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 ...
L.Dutch's user avatar
  • 7,151
3 votes
1 answer
179 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 ...
gerrit's user avatar
  • 3,967
3 votes
2 answers
199 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 ...
L.Dutch's user avatar
  • 7,151
1 vote
4 answers
321 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?
Anas's user avatar
  • 247
18 votes
11 answers
12k 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 ...
user43913's user avatar
  • 189
3 votes
5 answers
933 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 ...
JoeKahno's user avatar
0 votes
6 answers
7k 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 ...
Kartick Vaddadi's user avatar
3 votes
2 answers
1k 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....
Anas's user avatar
  • 247
26 votes
9 answers
17k 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 ...
Stephen Meschke's user avatar
6 votes
2 answers
499 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 ...
L.Dutch's user avatar
  • 7,151
5 votes
2 answers
621 views

Yellow anti-rotation washer, Shimano Nexus 3 speed with trailer?

Should I keep or remove the yellow anti-rotation washer when installing a child trailer to my e-bike (EcoRide with Shimano Nexus 3 speed)? The trailer installs through the wheel axle (see attached img....
Ola's user avatar
  • 1,037
2 votes
2 answers
1k views

Axle is too short

I recently bought a second hand bike which was originally sold with a flip flop hub to fix up as a project. The person I bought it from gave me a rear wheel with a geared hub. However, when I put ...
Edward Han's user avatar
9 votes
4 answers
4k views

Why is an old chain unsafe?

I recently took my bike in for a service and the mechanic urged me to replace my chain, potentially at great cost (might need a new wheel). He said it might jam or pop off. He couldn't explain to me ...
kennyB's user avatar
  • 193
5 votes
2 answers
349 views

Which kind of test has bike parts to pass to be sold?

This is a question regarding bureaucracy/testing. What are the quality tests / standards that a bicycle and/or its parts need to pass before access the market? I am thinking about Germany/USA and ...
EarlGrey's user avatar
  • 3,712
4 votes
1 answer
6k 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?
HelpfulHandGrenade51's user avatar
6 votes
3 answers
2k 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 ...
Criggie's user avatar
  • 127k
22 votes
6 answers
9k views

Should unconventional colors be avoided for lighting?

Red/amber lights in the rear of the vehicle, white lights, in front of it: that is the good old convention and certainly switching their places is a bad idea. A quick search, however, shows other ...
user avatar
1 vote
1 answer
275 views

Frame with dent

I recently bought a bike and then realized it had a dent on the top tube. I would like to know your opinion if it is safe to ride. The bike is a Devinci Cameleon made from double butted aluminium. The ...
Tiago C Martins's user avatar
11 votes
4 answers
3k views

Banged frame: Is it still safe to use?

My girlfriend's bicycle was vandalized by a neighbour. It seems like they banged it with a hammer or something right in the middle of the frame. Is this still safe to use?
Jonorl's user avatar
  • 111
10 votes
4 answers
4k views

Roadbike with aluminium wheels in mountains. Is it safe?

I'm planning my upcoming trip to ride real mountains in Spain on my road bike. So far I used Mavic Ksyrium aluminum wheels but mostly on flat areas. I'm not confident with going downhill on this ...
Velocoder's user avatar
  • 277
4 votes
2 answers
201 views

How do I determine what types of maintainence I need to perform?

I just got a new bike and I want to make sure I’m able to keep it up properly. I am entirely new to this. Edit: thank you all for your responses, I’ll keep these all in mind and I’m adding them to my ...
HelpfulHandGrenade51's user avatar
3 votes
4 answers
1k views

In cycling friendly cities, how do near-sighted cyclists who need glasses manage to bike to work or school in the rain?

In cycling friendly cities, how do near-sighted cyclists who need glasses manage to bike to work or school in the rain? When I say cycling friendly cities, I'm referring to cities such as Utrecht, ...
Brian's user avatar
  • 1,043
25 votes
4 answers
4k views

Can road bumps excite frame eigen frequencies?

During my last bike holiday I have happened to ride downwhill on roads which had transversal stripes to mark the approaching of a turn. The stripes were made with road paint, and were slightly higher ...
L.Dutch's user avatar
  • 7,151
3 votes
2 answers
275 views

Third eye helmet mounter mirror swivels too much

I've got a "third eye" type bike mirror attached to my helmet. It has two points of articulation: one near where it mounts to the helmet, which controls how far it swings up, and the other near the ...
Michael's user avatar
  • 1,249

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