Going Places

Press a button 

Imagine having to read a map or even worse having to ask somebody for directions.  Today we ask siri, type into our phones, or just press a button and ask the car for directions.  What would happen if GPS stopped working?  Drivers would be slowing down traffic, looking at street signs or stopping to read road maps.  And how on earth would Uber ever know where to pick us up?

Everything is based on GPS, from emergency services to containers in ports, to factories, power grids and more.  It is estimated the cost of GPS crashing to be a loss of about 1 Billion per day.

The Global Positioning System consists of 24 satellites synchronizing with time in such an exact degree of precision that when we ask our phones for directions, it picks up signals from some of those satellites based on the time the signal was sent and where the satellite was.  If the clocks on those satellites are not exact,our route will be off by miles.  

Re-fold it back to the way it was

Not so long ago, before GPS, reading a road map was the only way to get around.  You can still find  maps at some gas stations and rest areas.  Maps are huge but fold down small enough to keep in the glove box. 

Reading a Road Map 

The index on the map lists the names of all of the cities listed on the map in alphabetical order and the corresponding location of each listing. Across the bottom of a map there may be sections that are labeled A, B, C and on the left side of the map, the grids may be labeled numerically. If a town’s location is described as B4 in the index, you would look in the grid where column B and row 4 meet to find the town. When using a map to navigate, locate your current location and your destination first.

Source: BBC 50 things that made the modern economy- GPS  and Driving-test.org

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