Questions tagged [safety]

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

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6 votes
2 answers
2k views

Is my carbon frame done?

I have a carbon trek Emonda bicycle. Today, my rear derailleur got caught in my wheel. As a result, the rear derailleur is bent, the rear derailleur hanger snapped off, the chain got twisted and the ...
5 votes
4 answers
676 views

Elastomer in bicycle trailer hitch: is it important?

I have a bicycle trailer (Hamax Outback One). Recently I inspected the hitch as I was connecting the tow bar to the bicycle. The steel spring was getting rusty, but I do not think it's a big deal. ...
8 votes
6 answers
3k views

Safety of taking a bicycle to a country where they drive on the other side of the road?

Bicycles are different in countries where people drive on the other side of the road. Suppose I have a bicycle and I am moving to a country on another continent where people drive on the other side. ...
1 vote
1 answer
209 views

Broken fork bearing crown race stays

this is my diy electric bike, but in the latest headset servicing (I had to change the seal of the top bearing), I noticed that I've a broken part on the top of the "bearing crown race stays"...
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17 votes
8 answers
8k views

Is cycling on this 35mph road too dangerous?

I'm thinking of bike commuting to work and there is a stretch of road with no sidewalk and 35mph speed limit. Is this too dangerous for biking? I'm not in the best shape so I can't go very fast. ...
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4 votes
2 answers
291 views

Dangerous feature on a new 20" wheel kids bike? EZBuild pedals

TLDR: Rather than threading a pedal directly into the crank arm this bike maker has an EZBuild feature. The pedal is threaded into a cast aluminum part at the factory that rotates around the crank ...
  • 18k
8 votes
5 answers
3k views

Is My Rim Cracked?

Is my rim cracked? Do I need to replace my rim? Do I need to replace my wheel? (See left/first picture). If either 2 or 3 is Yes, what's the most frugal way to go about it? Notes This is the rear rim....
8 votes
5 answers
2k views

Front tire & downtube clearance - extremely dangerous?

I recently moved cities and met someone to buy a used "vintage" bike from them. While test riding at a slow speed I gradually applied the brakes. The front brake seemed to jump from light ...
2 votes
1 answer
105 views

Bell that sits above trigger shifter?

I'm looking for a bell that will sit above a trigger shifter on a flat bar bike. Placement is a safety issue: in this location I can maintain hands on bars, brakes, shifters and warn pedestrians at ...
  • 1,317
1 vote
1 answer
183 views

Replacing an ebike's cable disc brakes with hydraulic disc

I have a Viking Gravity 250w 24v ebike. I'm just wondering if I can replace the braking system with a hydraulic type and what would happen to the wired braking safety feature? Would I have to retrace ...
16 votes
7 answers
3k views

Turning right but can't see cars coming (UK)

I'm a newbie to cycling and I was wondering if I done the right thing or I should do something different next time. I'm coming down towards a main road where I can either go left or right. I want to ...
6 votes
3 answers
512 views

Does a highly visible frame colour improve safety significantly?

Studies have shown that wearing hi-viz colours, particularly on moving extremities such as one's feet, coupled with hi-viz helmets and cycling shirts, increases the chance of been seen by a driver ...
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5 votes
1 answer
815 views

Is a chin strap with a cup safer than an under-chin strap?

Many helmets have chin straps to hold them on. One design uses a split chin-strap, where the strap splits into two forming a cup shape, one going just below the lower lip and one under the chin. In ...
  • 151
11 votes
5 answers
3k views

Mounting the front light on the frame instead of the fork or the handlebar?

I've had my front light mounted on the handlebar for the last 4 years or so. I never liked the bulky look and more importantly, how it jumps around in a response to my handlebar movements (if I'm on a ...
  • 227
0 votes
1 answer
1k views

How reliable is the "smart" brake detection on a $20 tail light? [closed]

Here are some "smart" tail lights I found on Amazon: Having the same looks, prices, description grammar, no-name random "brand" names and sometimes even stock photos and videos, ...
  • 227
0 votes
0 answers
126 views

Dent in Lower Aluminum Frame Of Cannondale Cyclocross

Recently purchased this bike second hand. How concerned should I be of this dent? It’s about midway down the lower frame.
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3 votes
1 answer
175 views

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. ...
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2 votes
0 answers
145 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 ...
  • 6,872
5 votes
2 answers
459 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 ...
  • 151
5 votes
1 answer
610 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 ...
  • 523
2 votes
1 answer
126 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 ...
8 votes
1 answer
259 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 ...
  • 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 ...
  • 609
4 votes
2 answers
238 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 ...
4 votes
1 answer
396 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
1 answer
617 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 ...
  • 201
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
2 votes
5 answers
764 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 ...
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1 vote
1 answer
146 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 ...
  • 2,120
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 ...
  • 315
2 votes
2 answers
145 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 ...
  • 18k
13 votes
12 answers
4k 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 ...
  • 139
2 votes
1 answer
809 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 ...
  • 137
4 votes
2 answers
231 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 ...
  • 676
16 votes
8 answers
8k 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 votes
1 answer
333 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
1 answer
275 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. ...
1 vote
1 answer
905 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 ...
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 ...
21 votes
3 answers
9k 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. ...
  • 691
2 votes
2 answers
709 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 ...
3 votes
5 answers
621 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 ...
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1 vote
0 answers
87 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 ...
  • 6,629
3 votes
1 answer
167 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 ...
  • 3,280
3 votes
2 answers
185 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 ...
  • 6,629
1 vote
4 answers
315 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?
  • 227
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 ...
  • 189
3 votes
5 answers
774 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 ...
0 votes
6 answers
6k 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 ...
2 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....
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