How Does Google Maps Know Where Traffic Is?

Google Maps
Google Maps

Before you leave the house in the morning, a quick glance at Google Maps can tell you which routes should be avoided at all costs and which ones might get you to work a few minutes early. Google Maps can even tell you how long you can expect to be delayed should you take a route that’s more congested than usual. How can it possibly know up-to-the-minute information about your day-to-day travel plans?

The answer is one part creepy, one part cool: Google gets its information from you, according to Business Insider. The company uses the Location Services function on Apple and Android phones to track your coordinates. If you have the Location Services capability enabled for Google Maps, you're constantly sending real-time data about your whereabouts and the time it takes you to get from place to place. Google combines everyone’s data to determine the concentration of cars on the roads and how fast they are moving. (Or aren’t moving, depending on your situation.)

Over time, Google has compiled all of this traffic information to create traffic histories, which is how it can tell you if traffic is running slower or faster than “normal.” It also uses information gleaned from the Waze app, which includes updates from Departments of Transportation from across the country—that’s why Google Maps can pinpoint specific accidents.

If this is all a bit too Big Brother for your liking, you can simply disable Location Services on your phone—but you'd better hope that everyone else doesn't follow suit, or else Google's impressive calculations would be rendered completely useless.

11 Things We No Longer See In Schools

Popartic/iStock via Getty Images
Popartic/iStock via Getty Images

If you ask a fifth grader what a card catalog is, there’s a good chance your question will be met with a blank stare. And while this might make you feel positively ancient, there are definitely some academic traditions and technologies from your parents’ and grandparents’ generations that you’re too young to know about, too. For example, did you ever solve a multiplication problem with a slide rule, or carry your books with a book strap?

Here are eight things that you may or may not remember from your time in school, but today’s students probably won’t.

1. Card Catalogs

Before digital catalogs could deliver a list of books perfectly matched to even the vaguest search term, you had to manually hunt for relevant information in the drawers of a massive cabinet. However unwieldy and inefficient card catalogs may seem compared to current technology, there was a certain tactile satisfaction in thumbing through card after card to find a particular author, title, or subject. The Online Computer Library Center officially declared the death of the card catalog in 2015 after it sent its last shipment of cards to Concordia College’s library in Bronxville, New York. But plenty of old catalogs live on as storing units for sewing supplies, wine bottles, and more.

2. Food Pyramids

1995 USDA food pyramid
U.S. National Archives and Records Administration, Wikimedia Commons // Public Domain

The 1992 food pyramid that many Millennials likely remember from their early school days broke food groups into ambiguous serving sizes and advised you to eat the most servings of bread, rice, cereal, or pasta each day. It was replaced in 2005 with the more modern MyPyramid diagram, which identified serving sizes in cups or ounces and corresponded with a website you could visit for more information. In 2011, the USDA effectively killed the food pyramid altogether with the launch of MyPlate, a new plate-shaped diagram that recommends you eat mostly vegetables and grains. This, of course, has an extensive website of its own.

3. Rope Climbs

Though fitness tests in gym class have been stressing students out at least since the early 1960s, some of the tests themselves have changed. According to the parameters set by the Presidential Youth Fitness Program—which schools can use as a guide for evaluating grade school P.E. students—push-ups, pull-ups, and curl-ups have withstood the test of time, but there’s no mention of a rope climb. The new dreaded portion of the exam is the PACER, a series of sprints during which you have progressively less time to complete each one.

4. Slide Rules

slide rule
claudiodivizia/iStock via Getty Images

The slide rule, which dates back to the 1600s, did the job of a calculator before modern calculators existed in the classroom. It looks like a ruler crammed with extra lines and numbers, but the middle portion slides back and forth to give you the answers to multiplication and division problems, exponents, square roots, and more. It fell out of fashion with Hewlett-Packard’s introduction of the handheld electronic calculator in 1972, though some particularly fastidious math teachers still use them to keep their students from succumbing to the somewhat mindless nature of automatic calculators.

5., 6., 7., and 8. Chalkboards, Chalk, Chalk Erasers, and Chalk Holders

chalkboard, eraser, and chalk
diamondsky/iStock via Getty Images

Since just about every chalkboard has been replaced by either its cooler younger sibling, the dry-erase board, or its genius baby cousin, the smart board, it stands to reason that all chalkboard accessories have also gone out the window—no more chalk, chalk holders, or chalkboard erasers. The gradual disappearance of chalkboards also means that children will no longer understand the actual noise made by fingernails on a chalkboard. Much like we use the phrase chalk it up to mean “give credit” without having experienced it in its original context—where store owners would write a customer’s outstanding charges on a chalkboard—future generations might use “fingernails on a chalkboard” as an almost meaningless synonym for “really bad sound.”

9. Book Straps

book strap
Hemera Technologies/iStock via Getty Images

Before students carted heavy textbooks around in backpacks, tucked them into the crooks of their arms, or simply decided not to bring them to class, there was the book strap: a glorified leather belt which fastened around a pile of books and often included a handle. It didn’t protect your books from bad weather and it didn’t contain compartments for any other school supplies, but it might help keep your pants up if you forgot your actual belt.

10. Dodgeball

Dodgeball may not have completely disappeared from schools yet, but it’s only a matter of time before hearing the name never again evokes that strange mixture of excitement and fear. The soft-balled combat competition, also known as bombardment, killer ball, and murder ball, so obviously pits athletes against their less coordinated classmates and promotes the idea of a human target that it’s ceased to be the cornerstone of gym class. Many schools have outright banned it, while others have quietly replaced it with less polarizing activities. And, if Justin Long’s concussion on the set of 2004’s cult classic DodgeBall is any indication, those foam balls can cause some damage.

11. Dunce caps

student wearing a dunce cap in classroom
Library of Congress // Public Domain

The earliest known written mention of a dunce cap was in Charles Dickens’s 1840 novel, The Old Curiosity Shop, in which it’s made of old newspapers and sits on its own shelf in the classroom. The conical symbol of idiocy gained popularity during the Victorian era throughout both the U.S. and Europe, and continued to humiliate schoolchildren well into the 1950s. As if standing alone in the corner wearing flashy headgear didn’t draw enough attention to you, sometimes the dunce cap even featured bells.

This 'Smart' Bed Accessory Will Rock You to Sleep

Damir Khabirov/iStock via Getty Images
Damir Khabirov/iStock via Getty Images

Unlike other consumer goods, mattresses have largely remained exempt from the wave of “smart” home technology. Some mattresses, like the Tempur-Pedic or Sleep Number bed, offer options to adjust their incline or firmness, but the rest are not terribly sophisticated.

Adiva is looking to change that. The company is currently promoting the Adiva One, a “smart” bed accessory that claims sleepers can benefit from a slight rocking motion similar to movement that soothes babies. The device fits under the four legs of a bed frame and gently agitates the mattress while you sleep. Adiva asserts this calming motion can promote deep sleep. Motion sensors clipped to the mattress track the sleeper’s movement, allowing the device to make adjustments on the fly.

Because the attachments fit under furniture legs, they can also be placed under a sofa, in the event you wanted to produce a calming motion while binge-watching television.

Adiva appears to be basing its philosophy on a 2011 study published in the journal Current Biology, which examined the role of a gentle rocking motion like that of cradling a baby or sleeping in a hammock. In the study, 10 volunteers napped on beds that were either stationary or rocked slightly. The shaken sleepers reported a comfortable nap and the study’s authors reported deep sleep was induced more quickly in the shaken subjects versus the stationary ones. The sample size was small, however, and with limited research available on sleep oscillating devices, you might want to opt for the Adiva One with cautious optimism. It works for babies, so it might work for you, too.

The Adiva One is currently being funded via an Indiegogo campaign, where early adopters can purchase the device for $1428, or 53 percent off the expected retail price of $3075. The device is expected to ship beginning in April 2020.

[h/t Digital Trends]

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