Questions tagged [road-vehicles]

Use this tag for question about cars, trucks and other road transport.

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14
votes
2answers
6k views

Is it possible to detect a laptop inside of a car boot?

Recently someone at a party told me thieves could detect a laptop in the car boot, even when turned off. At first I thought this was ridiculous, but I found some google queries provided a theory, the ...
3
votes
1answer
2k views

Radiation dangers with GPS/navigation cellphone apps [closed]

From Wikipedia: Some national radiation advisory authorities... have recommended measures to minimize exposure to their citizens... Do not use telephone in a car without an external antenna I'd ...
31
votes
1answer
16k views

Is running the engine for five minutes before driving beneficial for the car?

There is a belief among a lot of people that you should start your car and leave it on for 5 minutes before moving it in the morning. Is this practice good for the car in any significant way, or it is ...
50
votes
3answers
4k views

Is cycling worse for the environment than driving to work if you need to take a shower?

I had an argument with a work colleague. He claims that me cycling to and from work is less environmentally friendly than driving because I will eat more as a result of expending more energy. I have ...
7
votes
1answer
2k views

Does putting a reflective screen inside your car against the windshield have a meaningful impact on internal temperature?

In southern climes one can see many such reflective screens on cars in parking lots. Not all drivers use them, but many do. Is there a meaningful impact on the internal temperature of your car? Does ...
4
votes
1answer
506 views

Are “black-box” data recorders to be installed in all new US cars?

Occupy Corporatism reports: With complete disregard for driver privacy, the Obama administration gave their consent to the National Highway Traffic Safety Administration (NHTSA) to mandate black box ...
2
votes
1answer
4k views

Can a Renault Megane drive 1700 km with 1 tank?

source See the above advert which claims that Renault Megane can cover 1700km with one tank. According to this link the Megane model has a fuel tank capacity of 60 Liters. Can the Megane cover 28.3 ...
6
votes
1answer
11k views

Eggs + Water = Total windscreen blindness!

I was just sent this hoax email, but wanted to check one of the claims in it: IF YOU ARE DRIVING AT NIGHT AND EGGS ARE THROWN AT YOUR WINDSCREEN, DO NOT STOP TO CHECK THE CAR, DO NOT OPERATE ...
7
votes
2answers
4k views

Does the Lexus LFA need digital gauges because analogue ones are too slow?

I first heard this claim a few years ago on the Top Gear program from the BBC. Since then I keep hearing it whenever I hear the Lexus LFA discussed. From this February 2012 article: This ...
29
votes
3answers
1k views

Do cars pass with less space for bicyclists who wear helmets?

This question is an off-shoot of from the discussion about helmet safety. There is an assertion that when a car passes a bicycle, it allows less space to those who wear a helmet than those without. ...
3
votes
0answers
102 views

Should we heat up engines before driving a car? [duplicate]

Possible Duplicate: Is running the engine for five minutes before driving beneficial for the car? My wife, her dad, and my dad says so. They said that before you drive a car, you need to turn on ...
22
votes
1answer
5k views

Does the US ban high-gas-mileage cars?

A recent YouTube video features a claim that the VW Passat TDI 1.6 and similar cars have been banned by the US government, specifically because their gas mileage is too high. The purported reasoning ...
4
votes
0answers
1k views

Are rear-end collisions more dangerous in Compressed Natural Gas (CNG) than Petrol cars?

Is it more dangerous to be in a passenger car with compressed natural gas than with a petrol fuel tank when it comes to rear-end collisions? Lawrence Godwin, on eZine claims there is a explosion risk ...
8
votes
1answer
1k views

Is it illegal to stop a car for a pedestrian crossing in China?

Today while preparing for one of my classes, this time on law, I found the snippet on a great many websites saying that in China: Drivers of power-driven vehicles are forbidden to stop at ...
4
votes
1answer
708 views

Does Honda Civic CNG fare well in crash safety tests as claimed by its manufacturer?

Honda touts great safety for their Civic CNG, but I have second thoughts concerning their fuel tank's safety in rear-end collisions. I looked for some tests and data, but could not find anything ...
6
votes
2answers
2k views

Does the time of day affect fuel economy?

One tip that I heard as a young driver was something along the following: Try to refuel in the early morning or in the evening as the denser gas will get you better fuel economy. Since then I ...
9
votes
1answer
719 views

Can an on-the-fly water electrolyzer linked to the air intake improve fuel efficiency of a gasoline engine?

This article initially seems to investigate so-called water powered cars. The final few paragraphs of the article however branches off into discussion about a system where (as I understand it): A car'...
16
votes
3answers
63k views

Can you unlock a car using a cell phone?

I have heard that it is possible to unlock a car using the remote key-fob over a cell phone network. Scenario: Adam locks his keys in his car. He uses his cell phone to call his wife, Betty, who is ...
11
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2answers
1k views

Do the majority of people go 80 mph on the motorway?

I live in the UK, and my dad has told me "It is not possible to drive at 70 mph on the motorway. Everyone goes at 80 mph and [the police] don't care." When he says nobody he means the majority of ...
11
votes
1answer
724 views

Is reducing carbon emission from cars futile?

One of the claims in "SuperFreakonomics" is, that reducing CO2 emissions produced by cars have very little practical impact on global warming. Their arguments are: human activity is responsible for ...
9
votes
0answers
409 views

Did a Blackberry service outage reduce traffic accident rates in Dubai and Abu Dhabi?

A report from The National has been widely cited on the Internet recently: A dramatic fall in traffic accidents this week has been directly linked to the three-day disruption in BlackBerry services. ...
9
votes
0answers
393 views

Are electric cars better for the environment than internal-combustion cars? [duplicate]

Possible Duplicate: Does a car with a hybrid engine and Lithium batteries pollute more than a car with conventional technology? We hear a lot about electric cars being the future. But we also ...
6
votes
1answer
5k views

Does the type of oil you use in your car make a difference?

I have a car that has over 140k on it. Are there any valid reasons to use high milage oil instead of conventional oil? Or is it just a marketing gimmick? Similarly what's the difference between ...
18
votes
1answer
2k views

Are Hummers more environmentally friendly than Prius?

I've heard this rumor a few times (example). The argument is that it takes energy to make the car, and when you take into account how long each car will last on the road, driving Prius's over a large ...
24
votes
3answers
2k views

Is premium fuel “better”?

Is there any evidence that premium and/or high-octane fuel (petrol/gas for cars): improves performance; and/or improves engine longevity; and/or improves mileage so that money is saved on fuel, even ...
20
votes
2answers
3k views

Do elderly drivers cause the most accidents?

Has it been statistically or empirically proven that elderly drivers (65 and over) are responsible for more accidents than any other age group? Some offer figures such as: In 2001 drivers over 70 ...
15
votes
1answer
1k views

Does 'Rubber Necking' happen after an accident?

When two cars get into an accident the cars around them need to slow down to avoid hitting the cars involved in the collision. This causes a backup in traffic. People have often told me that traffic ...
4
votes
1answer
853 views

Is there a difference in driving ability between men and women? [duplicate]

Possible Duplicate: Does gender affect driving skill? Time and time again I hear that "women shouldn't be allowed on the road because they are bad drivers" or similar stories. I'm personally of ...
14
votes
2answers
2k views

Platinum fuel saver

I've heard on the radio advertisements for a product called the Platinum Fuel Saver, that they claim that if you use it, you will increase fuel efficiency by 25%. What kind of data is there to support ...

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