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2835 Driving thumb thumb thumb thumb thumb
THE TRAFFIC RULE OF 85
Traffic engineers have found that 85 percent of drivers will spontaneously drive at or below the safe speed, given ideal conditions (light traffic, dry pavement.) They will often clock traffic for awhile and use this rule to establish the speed limit.
Tom Nelson, Photographer, Boston, MA, USA
(EC) Collected by The Editors
Current Rating: 5.1 out of 10 based on 16 reviews
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2836 Driving thumb thumb thumb thumb thumb thumb thumb
FINDING A SAFE FOLLOWING DISTANCE
Forget calculating car lengths. The safe following distance for a car is 2 seconds behind the vehicle in front of you (assuming dry pavement.) Figure from the time that the back of the car ahead passes a shadow or crack on the road to the time the front of your car reaches it. This rule is self-adjusting for speed.
Tom Parker, Editor, Lansing, New York, USA
(2860) Contributions from this contributor since (2007-01-01)
Current Rating: 7.1 out of 10 based on 17 reviews
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2838 Entertaining thumb thumb thumb thumb thumb thumb thumb
MINIMUM NUMBER OF COCKTAIL PARTY GUESTS
Cocktail parties should have at least 12 guests. With fewer guests, the party becomes one conversation in which only one person speaks at a time. At about 12 persons, the conversation splits into two or more groups with more chance for interplay and movement.
Tom Nelson, Photographer, Boston, MA, USA
(EC) Collected by The Editors
Current Rating: 7 out of 10 based on 15 reviews
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2839 Driving thumb thumb thumb thumb thumb
FINDING A PARKING SPACE
Unless the entrance is physically blocked, a parking ramp flashing it's "full" sign, isn't.
Owen T. Anderson, Magician, Hamilton, ON, Canada
(EC) Collected by The Editors
Current Rating: 5.1 out of 10 based on 17 reviews
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2840 Children thumb thumb thumb thumb thumb thumb
EVALUATING KID'S SPEECH
A child whose speech and intelligence are developing normally will say as many words per utterance (plus or minus one) as his or her age in years - e.g. a child of about 1 should be starting to make one-word utterances, a child nearing two should be starting to put two words together, etc.
Kate Gladstone, Brooklyn, NY, USA
(EC) Collected by The Editors
Current Rating: 5.7 out of 10 based on 16 reviews
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2841 Astronomy thumb thumb thumb thumb thumb thumb
FINDING A FULL MOON
Full moons will be in the south around midnight. Before midnight, they will be more and more in the direction of sunrise; after midnight, they'll be more and more in the direction of sunset - true for both hemispheres.
Kate Gladstone, Brooklyn, NY, USA
(EC) Collected by The Editors
Current Rating: 6.3 out of 10 based on 16 reviews
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2842 House and Home thumb thumb thumb thumb thumb thumb thumb
SHARPENING A KNIFE
To get a thirty degree angle on a knifeblade (good for many kinds of work) grind it so that the breadth of the exposed diagonal cutting-edge is twice the thickness of the blade.
Kate Gladstone, Brooklyn, NY, USA
(EC) Collected by The Editors
Current Rating: 7.1 out of 10 based on 16 reviews
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2843 Driving thumb thumb thumb thumb thumb thumb thumb
TURBO CHARGED CAR MILEAGE
A turbocharged car gets about ten percent better overall miles per gallon than a regular car of the same size and horsepower.
Lawrence A. Howe, Mechanical Engineer, Annapolis, MD, USA
(EC) Collected by The Editors
Current Rating: 6.5 out of 10 based on 16 reviews
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2844 Design thumb thumb thumb thumb thumb
RULE OF THUMB USED BY JAPANESE ELECTRONICS DESIGNERS
An American finger is the same size as a Japanese thumb.
Erik Nelson, Boston, MA, USA
(EC) Collected by The Editors
Current Rating: 4.8 out of 10 based on 16 reviews
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2846 Real Estate thumb thumb thumb thumb thumb thumb thumb
ESTIMATING AN ACRE
An acre is about the size of a football field without the endzones.
Kevin Williams, Austin, TX, USA
(EC) Collected by The Editors
Current Rating: 7.2 out of 10 based on 14 reviews
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2847 Grooming thumb thumb thumb thumb thumb thumb thumb thumb
DRESS FOR SUCCESS
White makes you look larger. Black makes you look thinner. Orange makes you look … orange.
Boden Day, Former Army Journalist, Newark, DE, USA
(EC) Collected by The Editors
Current Rating: 8.1 out of 10 based on 19 reviews
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