Change your resolution using the slider. Clicking the Resolution drop-down menu in Windows 7 and 8 will display the slider. Drag the slider to change the display resolution on your monitor. Resolutions other than the recommended one will result in a blurry, stretched, or squished image. Selecting a lower resolution will increase the size of objects on your screen.
You should reduce your speed by 1/3 on wet roads and by 1/2 or more on snow packed roads. If you would normally be traveling at a speed of 60 mph on dry pavement, then on a wet road. you should reduce your speed to 40 mph, and on a snow-packed road you should reduce your. speed to 30 mph. When you come upon slick, icy roads you should drive slowly and cautiously.
In the UK there is a guideline that if the weather/road conditions are normal, then 10% of the speed limit +2mph = the maximum speed over the limit before pulling someone over. E.G. 30mph limit ->10% = 3mph + 2mph = 35mph. 40mph limit ->10% = 4mph + 2mph = 46mph.