If so, is this due to being used to air conditioning? When I was younger AC was not common (I'm talking 1970's) so we just drove with the windows down when it was warm. I still like driving with the windows down and so do a lot of my friends even though we all have climate control. But my kids hate it. They always ask/tell/yell at me to roll up the windows and turn on the AC instead.

A 2004 report from SAE and General Motors reached the same conclusions as the MythBusters. In their test conditions, they found that running AC was less fuel efficient than having the windows down. The test studied an SUV and a sedan at low, medium and high speeds. Not surprisingly, both cars were the most fuel-efficient with the AC off and windows rolled up. When the windows were rolled down, fuel economy dropped, especially for the sedan, due to the increase in drag mentioned above. For both cars, fuel efficiency was at its worse with the AC on, windows up.


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Was wondering what factors might have contributed to my age-related high frequency hearing loss. While our daughters were teenagers (many years ago), they got the good cars and I happily drove a 1986 Toyota Camry with a dead air conditioner all around Texas on various Interstates at 70 to 75 mph with all four windows rolled down and rock 'n roll turned up loud enough to hear over the wind/road noise in the windows.

A 2010 study of just the wind/road noise in top-down/windows-down convertibles showed the average noise level to be 89 dB. Playing the radio loud as I did would certainly jack things up a bit more.

 -loss-from-driving-a-convertible-reality-or-myth

In a recent study published in the Journal of the American Academy of Audiology, it was found that individuals who drive with windows down for more than an hour daily are three times as likely to have hearing loss.

Because road noise is already a factor, listening to music while driving can further exacerbate things. This is because people tend to crank the volume. If the highway is already noisy, and you are turning up the volume so you can hear your music better, then this means the music has to be louder than the road noise. This is putting you into dangerous territory when it comes to potential damaging noise exposure.

ADAS and automated driving vehicles can help improve passenger safety while reducing congestion and making mobility even more comfortable. Building these solutions requires large-scale computational capabilities. Petabytes of data from road and weather conditions to obstacle detection and driver behavior need to be managed every day for the training, simulation and validation of AD functions. Machine learning algorithms that learn from billions of real and simulated miles driven are key to connected driving experiences.

Driving with your windows open also creates drag that cuts into your mile-per-gallon efficiency. So, while using your air conditioning uses extra fuel, it may save you some money and your ears some damage.

While the front windshield of your car blocks most of the UVA and UVB radiation coming from the sun, the side windows and sunroof may not be pulling their weight. Due to its shorter wavelength, UVB light is more easily blocked by window glass. However, the longer UVA wavelengths require additional protective measures to avoid passing through the glass.

Research has found that while the front windshield blocks 94 percent of UVA rays, the driver's side window only blocked 71 percent. To date, multiple studies have shown those that spend much of their time driving have an increased risk of skin cancer and UV-induced skin damage on the side of their body exposed to the sun. This damage is primarily due to the UVA light passing through the driver's side window.


Those who spend a lot of time driving should regularly conduct skin self-exams of the whole body and keep an eye out for any new, changing, or suspicious spots on their skin. Contact your dermatologist if you develop any new or concerning spots.


Extreme Car Driving Simulator (GameLoop) is one of the most entertaining games in the Android universe that you can now enjoy for PC. As the controls are fully adapted to PC, you will have no trouble driving around this enormous city's streets. By completing challenges and trying not to crash into other vehicles, you can gradually unlock new cars whose power you can put to the test as you drive.

During the warmer months, there's nothing like driving with the windows down, hanging your arm out the window and catching the breeze as it pulls your arm up to the sky ... or is there? What about driving with the windows up and enjoying the wonder of engineering that allows a cool air conditioning breeze to keep you chill as the pavement scorches just a few feet underneath you?

However, when a vehicle has its windows down, air passes into the car where it was formerly allowed to flow over it, causing resistance that didn't exist when the windows were up. You can think of it a bit like a parachute. When a skydiver opens up the parachute, it cups the air and causes a massive amount of drag, enough to slow the speed of the skydiver and allow him or her to land safely on the ground. Unlike the parachute, you definitely don't want a lot of drag on your car because it makes your engine work harder to get your vehicle up to the same speed.

For the sedan, when the windows were down, the efficiency was reduced by 20 percent, while the SUV fuel efficiency was reduced just 8 percent [source: Hill]. These differences are an important factor in determining just how much the windows down option will affect the fuel efficiency of your vehicle. The study concluded that the more aerodynamic the vehicle, the more drag open windows will create.

However, with newer, more efficient vehicles the difference is likely to be negligible. More recently, the SAE conducted a 2013 test using a 2009 Toyota Corolla at various speeds. They found that the Corolla had to travel at speeds over 80 miles per hour (129 kilometers per hour) with the windows down before aerodynamic drag made it less efficient than driving with the AC on. The SAE also tested a 2009 Ford Explorer and found that driving with the windows down was more efficient in the Explorer at lower speeds but there wasn't much difference in either method above 60 mph (96 kph) [source: Sanchez].

When you're driving around town at relatively low speeds, you'll use less gas by switching the air conditioner off and rolling down the windows [source: Arthur]. It's more efficient to drive with the windows down at slow speeds as opposed to faster speeds because there's less aerodynamic drag when you're driving slower [source: Motavalli].

If you're searching for a good rule-of-thumb number for when it's best to open the windows and switch off the air conditioner, the cut-off should be around 40 mph (64 kph) for larger vehicles [source: Arthur]. With smaller vehicles, like the Corolla, you could use the AC and get up to 70 to 80 mph (assuming that's a speed limit where you are) without using extra gas.

Really, the benefit or hindrance posed by driving with windows down will depend on a number of variables, like vehicle shape, engine size, and compressor efficiency. Every vehicle will behave differently, so there aren't many hard rules. No matter which method you use, practices like keeping tires properly inflated, trimming excess cargo weight, and regularly maintaining driveline components will likely see greater benefits to fuel economy.

It's also important to defrost your windows while they are defogging. This is an entirely separate process that should never include hot water. Defrosting takes a bit of preplanning but saves you a snow-capped mountain of a headache later.

If your heater isn't working or is slow to warm up, don't worry; it's still possible to defrost your car windows fast with the handy de-icing solution described in Step 5 above. Follow the advice listed below, and you'll be on your way to clearer glass in no time.

To defrost the outside of your windows without heat, add 2/3 cup of isopropyl or rubbing alcohol and 1/3 cup of water. Then, pour the mixture into a spray bottle. The best part: This solution will not freeze regardless of the temperature in your car.

Turning on the defogger setting helps clear fog or condensation on the interior of the windshield by directing warm air onto it, enhancing visibility and safety while driving. The rear windshield defroster, usually using electrical heating elements, helps remove frost, ice, or condensation from the rear window, improving rear visibility during cold weather conditions.

Cracking your windows slightly while using the defroster helps to exchange the air inside the car with fresh air from outside, aiding in the removal of moisture and speeding up the defrosting process. This helps to reduce the buildup of condensation on the windows and promotes faster clearing of fog, frost, or ice, improving visibility and making the defrosting more efficient.

Because isopropyl has a low freezing point of 128F below zero, you can leave the solution in your car and never worry about it freezing. Keep in mind that isopropyl can erode car paint if used too often, so stick to using this trick on your windows only and wash and wax your car regularly in the months that you use it.

Deicing wiper fluid is a specialized windshield washer fluid that contains chemicals designed to quickly melt ice and frost from the windshield and wiper blades. When sprayed onto a frozen windshield, the deicing fluid helps to break down the ice, making it easier for the wiper blades to clear away the frozen debris. It provides an effective and convenient solution for defrosting a car's windshield during winter weather, enhancing visibility and ensuring safer driving conditions. ff782bc1db

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