Questions tagged [safety]

Questions relating to the safe use of tools, safety procedures, use of safety equipment and other methods of avoiding harm to yourself or others.

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15
votes
2answers
2k views

What does this symbol of a car balancing on two wheels mean?

The symbol on the left in the image below is ubiquitous, yet so cryptic. What does it mean? Is it just a warning that the car is at risk of toppling over? I tried paging through the owner's manual ...
3
votes
4answers
152 views

What are the safety issues of having a childseat on the front seat?

Assuming the following, are there any safety reason to not put a child in the front seat? I am looking for a technical answer and not opinions e.g. the car chassi is stronger on the rear Assumptions *...
3
votes
2answers
223 views

Must I put chains on all four tires of a vehicle with all-wheel drive (AWD)?

On a car with AWD like the Honda Element that automatically engages drive power on the rear wheels as needed when the front wheels slip, should I install chains (a) on the front wheels only or (b) on ...
6
votes
2answers
28k views

How long to wait for radiator to cool down before working on it?

I need to drive my Integra to a friend's place to work on replacing the radiator. It's been 70 degrees lately, is waiting 1 hour long enough to allow the system to cool down? Any rules of thumb for ...
5
votes
2answers
4k views

What to do about 1 tire mounted on rim in wrong direction?

I put on my winter tires today. For the first time, I noticed that the direction arrows on one of the tires point the wrong way: looking at the outside, the arrows on three tires point ...
18
votes
11answers
15k views

What's the best gear to leave a manual vehicle in when parked? [closed]

I've been told that reverse is the "strongest" gear, so in a manual transmission vehicle you should park your vehicle and leave it in reverse in the event of a parking brake failure. Others have said ...
1
vote
1answer
50 views

Safety for different years

I am considering buying the Ford S-Max, second-hand. I went to euroncap to see safety ratings, but they rate only 2 years: the 2015 model and the 2006 model. I need to make a choice between a few ...
4
votes
3answers
5k views

What are the safety sensors & cameras on those new windshield packs? (like Volvo city safety)

Many new models come with sensor & cameras on the windshield, like this Volvo: Although cars came from different manufactorers it seems that they all have pretty much the same pack - these 4 ...
12
votes
2answers
5k views

Does my electronic parking brake remain engaged if I disconnect the battery?

I have a manual Audi A4 with an electronic parking brake. For safety reasons, I'm planning on leaving the battery disconnected for about a month while I do a variety of cosmetic work on the vehicle (...
11
votes
6answers
4k views

When is remote start unsafe?

I recently bought a new GM vehicle in the USA. It has a factory remote start and I can use an app to perform vehicle functions and reports, including being able to start my car remotely from my smart ...
9
votes
2answers
1k views

How do seat belts function?

How do belts function (work)? A diagram could be useful and a description of how seat belts function. How do you pull the belt? How do you buckle the belt properly?
5
votes
1answer
1k views

My scooter got tipped over by a parking car. How to make sure there is no serious damage?

Got a scooter recently which I leave parked on the street while at work. A couple of days ago I was about to ride it home when I noticed a note saying that this person tried to parallel park near it ...
11
votes
2answers
5k views

Reusing self locking nuts

I am in the progress of doing some work on the suspension. Can I reuse the nuts on the bolts holding critical parts (struts, tie rod, etc.) if I clean the threads and apply thread locker? My aim with ...
12
votes
3answers
1k views

Spring tensioner safety

I recently ordered this tool kit at an extremely reduced price. While I am confident about the general quality of those tools I am quite reserved about the spring tensioner included in the kit. In ...
21
votes
10answers
16k views

Is a bigger car safer than a smaller car? [closed]

From the point of view of mass, a smaller car appears to be a disadvantage if in an accident with a bigger car, because the change in momentum of the smaller car will probably be higher. A bigger car ...
2
votes
1answer
287 views

Which acceleration threshold for blinking brake light?

I would like to modify the third brake light of my car to add blinking when a strong deceleration is detected. What threshold should I set? given the basic rules of friction, the maximum possible ...
6
votes
4answers
15k views

Technique to test an alternator - fact or fiction?

A friend explained that the following is a simple way to test an alternator to see if it is working: Turn on the vehicle. While it is running, carefully remove one of the 12V battery leads. See if ...
9
votes
2answers
2k views

Do parts (like Brakes) & brake dust still contain Asbestos? What years did parts contain Asbestos (or anything equally / more dangerous)?

Is Asbestos still used in any currently manufactured parts, brakes or others? Specifically asking about the USA & Canada, but info on anywhere else in the world is good too. If it's not still ...
5
votes
1answer
182 views

Small tire rubber split

there is a small slit/tear on my rear tire sidewalk near the rim. I don't think it from hitting a curb. Wanted to know if it's just cosmetic or info should have it replaced. Would like to add ...
49
votes
6answers
14k views

Why don't rally cars have airbags?

Why don't rally cars have airbags? Other competition cars, including Ken Block's don't have airbags either. Is it just for weight reduction, are they redundant or is there another (major) reason?
6
votes
3answers
3k views

Safe jack / jack stand points for 2002 Ford Focus

I have a 2002 Ford Focus SE wagon. I want to place jack stands on the welds on the side of the car beneath the front and rear doors, but cannot fit both the jack and stands there. So I want to jack ...
1
vote
0answers
54 views

My left rear tire looks kind of flat

My left rear tire looks kind of flat but no bubble after I spun out into shoulder during rainstorm. Is it dangerous to keep driving on it?
12
votes
3answers
17k views

Is it safe to fix a bent motorbike wheel?

Long story short my front wheel took a hit and the rim is now slightly bent. Now, since this is a forged aluminium wheel, replacing it costs the best part of 1500EUR. Being on a budget I thought of ...
4
votes
4answers
38k views

Driving a car with four out of five studs tight on one wheel

While prepping for a drive tomorrow I noticed the far side front wheel of my car has one stud out of five that is somehow loose. All other four studs are secured and tightened. By "somehow" I mean ...
9
votes
4answers
8k views

Is it safe to place wood between a car and a jack stand?

I have a 2013 2LS Camaro and I am looking to change the rear differential fluid and need to jack up the rear end of my vehicle. Based on videos and enthusiast forums, people achieve this by putting a ...
8
votes
2answers
1k views

What's the best place to safely store a life hammer?

This is not really a maintenance question, but I figured this would be a good place to ask. I have a life hammer in the glove compartment, but I'm having doubts about where to store it. I figure that ...
5
votes
1answer
67 views

What would be the need for more than 2 ground wires in any car, truck, suv, van?

With the understanding that most all vehicles have at least 2 grounds wires, what items would add to the list of minimum requirements for a safe grounding system. An 'item' is defined as an object ...
7
votes
4answers
220 views

Do no-name tires go through thorough testing?

Tire (tyre) brands come in three categories: Major brands that advertise extensively Relatively unknown brands that are actually made by the major brands Relatively unknown brands that are ...
6
votes
2answers
571 views

How do I inspect a used tire?

Used tires, how can I be sure that they are roadworthy? Aside from looking at the general appearance, how do I properly inspect the tire(s)? Are there any scenarios, (damage has occurred), where I ...
67
votes
14answers
29k views

Are classic cars safe?

Are classic cars safe? I am interested to know the differences between modern vehicles and vehicles of old from the 1960s. In the event of an accident, how does a classic vehicle compare to a modern ...
16
votes
6answers
9k views

How to keep wheel ramps from sliding?

I have a very smooth garage floor. When I try to use my wheel ramps for the quick and easy way to raise a vehicle, they will often slide, sometimes just one, but other times both. They will sometimes ...
16
votes
2answers
2k views

Is it safe to drive in race conditions with missing lug nuts?

You know sometimes you read something and think "What?" Well, would you be happy to drive a 900 BHP car in a competition with lug nuts missing? Apparently NASCAR has introduced a rule change so that ...
5
votes
1answer
179 views

Car battery ground appears to have severed, is it safe to jump?

I tried to start my car today but after a few splutters, the ignition quit (i.e. turning it does nothing now). The inside lights / brake lights don't go on anymore, so I assume the battery's dead. But ...
21
votes
6answers
45k views

How to raise the car higher than the jack stands will allow?

So it's time to raise the car onto jack stands, but for whatever reason it needs to go higher than the stand height allows. How can I safely raise the height of the car? What I have done in the past ...
46
votes
14answers
11k views

How do I save myself from a sinking vehicle?

Every year in Arizona there are monsoon storms and somebody inevitably get's killed in a car that is sinking in water. It appears the primary issue is getting free from the vehicle. After that, ...
8
votes
1answer
4k views

Jack stand placement on frame rail for 2000 Toyota Camry

I did search "jack stand" and there are lots of posts that get close, but nothing that really covers the specifics of what I'm looking for here. I have a 2000 Toyota Camry with 143k mile on it. My ...
11
votes
2answers
12k views

How Important Are the Rear Shocks / Struts

When people talk about changing the shocks or struts, it's usually the front ones due to comfort, handling and safety reasons. But what about the rear ones? How much of a problem are worn out rear ...
7
votes
1answer
200 views

How to test gas station air compressors before use?

Yesterday I was with my wife and three children in the car, 300 KM from home just after sunset. I pulled into a gas station and as before all long trips, I dialed 31 PSI on the gas station's air ...
4
votes
1answer
94 views

Toyota Corolla '70-'73

I am seriously thinking about acquiring a Toyota Corolla from the E20 or 30 series (1970-1973, 1974-1979),but I have some concerns I would like to discuss and clarify if possible: The car does not ...
7
votes
1answer
4k views

Is the smoke or powder produced from an airbag detonation dangerous/toxic?

When the airbag has gone off, you often see a lot of smoke and stuff and there is a load of dust and powder all over the car What is this powder and smoke normally (obviously all air bags are ...
10
votes
2answers
6k views

What are some good options for bumper pushing

What is a good way to push with your bumper without ruining the body of the car you are pushing (paint scratches do not matter.
10
votes
3answers
507 views

How is this pavement optimized to suppress water splashing?

In my experience driving through the rain at speeds above 100 km/h results in a cloud of sprayed water behind the car, like so: However, I encounter more and more recently repaired road sections ...
5
votes
1answer
10k views

How do seat belt pretensioners work?

I was reading another post that had mentioned seat belt pre-tensioners with no explanation of how they function and are activated. From what I understand seat belt pre-tensioners are a one time use ...
7
votes
3answers
28k views

Is it dangerous to drive with partially torn control arm bushings?

My 2008 Acura TSX had developed a violent shake when accelerating. Upon a brief inspection, I noticed the control arm/compliance bushings were partially torn (completely at one point, partially at two ...
0
votes
1answer
453 views

All 4 tyres for Santro Xing 145/70/ R17 can be used instead of original 155/70/R17 tyre size

I have new 4 tyre size of 145/70/R17, can I use these tyres instead of 155/70/R17 original tyre size. I will replace all 4 tyres with new tyres. Is it recommended. Shall I face any technical problems ...
5
votes
1answer
67 views

How to conduct an at-home winter safety check?

I have an '09 Honda Fit. It's a manual transmission. I bought it in the summer of 2013 and there are no warranties left on it. Other than regular oil changes, tire rotations, and having the battery ...
16
votes
4answers
110k views

Is a tire with exposed wire safe to drive on?

This is my front passenger tire. As you can see, there is a large crack where you can see wire underneath. I ordered new tires that are supposed to arrive on Friday, however, I still need to get to &...
20
votes
6answers
206k views

I drove with my Parking Brake on for 30 mins: should I be worried?

Yesterday, I was driving my car for about 30 minutes on the highway at speeds of up to 60 mph. I felt my brakes weren't really working and looked down to notice my emergency brake had been on the ...
6
votes
4answers
16k views

Is it recommended/necessary to wear rubber gloves while replacing a car battery?

I'm not too car-savvy but I want to start working on my car on my own. My first challenge has arisen: replace battery. Do I need to concern myself with being shocked while trying to change the ...
1
vote
1answer
125 views

How to properly add engine oil?

My car is loosing engine oil and so every once in a while I need to add anywhere between a liter and two liters to it. So far, I've done it with the engine warm, and I'm only careful not to let the ...