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Safe Driving Techniques
This category is for all questions and answers about the do’s and don’ts of the road, as well as tips for safe driving skills.
2,050 Questions
What is the side of the public highway called that you use when having a flat tire?
You pull off onto the "hard shoulder" or the "curb".
How does a fingerprint sensor work?
A fingerprint scanner system has two basic jobs -- it needs to get an image of your finger, and it needs to determine whether the pattern of ridges and valleys in this image matches the pattern of ridges and valleys in pre-scanned images. There are a number of different ways to get an image of somebody's finger. The most common methods today are optical scanning and capacitance scanning. Both types come up with the same sort of image, but they go about it in completely different ways. The heart of an optical scanner is a charge coupled device (CCD), the same light sensor system used in digital cameras and camcorders. A CCD is simply an array of light-sensitive diodes called photosites, which generate an electrical signal in response to light photons. Each photosite records a pixel, a tiny dot representing the light that hit that spot. Collectively, the light and dark pixels form an image of the scanned scene (a finger, for example). Typically, an analog-to-digital converter in the scanner system processes the analog electrical signal to generate a digital representation of this image.
The scanning process starts when you place your finger on a glass plate, and a CCD camera takes a picture. The scanner has its own light source, typically an array of light-emitting diodes, to illuminate the ridges of the finger. The CCD system actually generates an inverted image of the finger, with darker areas representing more reflected light (the ridges of the finger) and lighter areas representing less reflected light (the valleys between the ridges). Before comparing the print to stored data, the scanner processor makes sure the CCD has captured a clear image. It checks the average pixel darkness, or the overall values in a small sample, and rejects the scan if the overall image is too dark or too light. If the image is rejected, the scanner adjusts the exposure time to let in more or less light, and then tries the scan again. If the darkness level is adequate, the scanner system goes on to check the image definition (how sharp the fingerprint scan is). The processor looks at several straight lines moving horizontally and vertically across the image. If the fingerprint image has good definition, a line running perpendicular to the ridges will be made up of alternating sections of very dark pixels and very light pixels. If the processor finds that the image is crisp and properly exposed, it proceeds to comparing the captured fingerprint with fingerprints on file.
How far behind should you stay from another vehicle in traffic?
The universally accepted answer to this is:
2 seconds in normal driving conditions (good weather & dry roads)
and
5 seconds in inclement weather (ie: snow and icy roads).
Pick a stationary object by the side of the road (such as a telephone or hydro pole) and use it as the guage of measure. When yhr vehicle ahead passes it (lets use the pole), say out loud " 1, one thousand, 2, onethousand". you should have finished saying that before you reach the same pole or other marker.
Is it against the law to stick your hand out a car window?
Technically - probably yes. It is against the DMV Codes of most states if a "load" extends beyond the perimeter of the vehicle body. Check your own state's DMV regulations.
To any vehicle already in the intersection, to pedestrians, and to emergency vehicles with emergency equipment operating.
What is a traffic signal that has been green some time?
This is called a "stale green" signal. It is about to change to amber. This is also recognized at some intersections by the flashing crosswalk signal informing pedestrians not to cross.
Padding slows the occupant hitting it down "slightly slower" that if the same occupant hit a non padded dash. (it reduces the G forces experienced, helping to prevent injury.)
The padding acts (to a much lesser degree) like a parachute acts to slow a person falling from the sky.
Also, a padded dash help to avoid the person hitting "sharp" parts of the dash.
Consider jumping onto a "bed of nails" and then jumping on to the same bed of nails with a mattress over the top of it.
Same effect.
Is it legal to pull from a parked position on a curb and do a you turn over a double yellow line?
No u dont need to u ve to look before turnin to the lift side.
What are the six conditions in the smith driving system?
you probaly mean the 5 KEYS to safe driving, Aim high in steering Get the big picture Keep your eyes moving Leave yourself an out Make sure the see you A.G.K.L.M.........All good kids love milk!
18 years of age
Why cant you use cruise control the first 500 miles in your new car?
This an old wives tail based on the old idea that maintaining a steady speed was bad for the engine in the first part of the break-in period.
Modern engines no longer require this type of care and the best advice I can give is drive the dang thing the same way you will for the next 20 years.
Why water is coming out the tailpipe in a petrol car?
Typically, it would be due to condensation formed when the hot exhaust gases come into contact with the much cooler outside air. Worst case scenario, it could be the result of a blown head gasket (although water coming out of the tailpipe wouldn't be the only effect from that).
Do you have to hold the clutch in every time you shift on a harley?
It's much better for the drive train that way.
Do you need to use the parking brake?
The only time you "need" to use the parking brake is when you are parking on any kind of incline. However, even if parking on flat surface, it is good to put the parking brake on when parked.
What is driving with foot on clutch pedal called?
"Riding the Clutch" and a good way to burn it out.
Also: a very bad habit
Do trucks have a larger blind spot?
Trucks have several blind spots, matter of fact we have blind spots on all four sides of the unit. Goggle or use another search engine and find " no zone".
Can you get a speeding ticket while riding a horse?
definitely, local ordinance set speeding limits for all moving means
How can you determine whether you are not looking far enough ahead when driving?
are you looking as far down the road as you can? if not you are not looking far enough ahead.
Can you drive to school with a permit and park there in Florida?
You cannot drive anywhere "solo" on a learner's permit, school or otherwise. Just going to school does not circumvent the laws for anyone.
Can you drive in Maine with a Massachusetts permit?
No you can't Because we are unable to drive in Massachusetts with a Maine permit and it is the same for a Massachusetts permit in Maine.
The previous statement is not true. A Maine "learners permit" is valid in most other states (Florida does not recognize a Maine learners permit), and other states are valid in Maine provided that you comply with all laws regaurding operating a vehicle in that state with a learners permit, ie. checking with that state beforehand to ensure the licenced driver accompanying you meets state criteria to "instruct" you. In Maine this means the accompanying driver is at least 20 years of age, and has had a valid license for over 2 years without infractions. This information can be attained thru calling, emailing, or faxing your inquiry to the appropiate states' motor vehicle department, and in many cases this information is readily available online at the respective states motor vehicles web page.
