We show the new autonomous car models and explain how they work: Google, Nissan, Mercedes and GM in a race to the future.

One of the most exciting technological careers is the one that is currently living in the world of motoring. After the electric cars the next big goal is clear: autonomous cars , vehicles that can behave themselves up in high traffic cities. Many may know that of Google, but several companies are already showing their proposals:

Google: The most ambitious

Google is who started this trend with its model modified Toyota Prius , which are currently a fleet of test vehicles already covered more than 500,000 miles without problems (and without driver course). How do they do? The heart of the system is a complex laser system (a total of 64 lasers) that sits on top of the phone. These laser creates a 3D map of the area , which is then compared with the high-resolution maps that Google has to have a complete vision of the world around him. Thanks to this know where the corners, where there are obstacles and follow traffic rules.

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Also incorporate a GPS that used to follow and know the way from one place to another. Finally have bumpers radars to detect speeding traffic and a camera in the rear-view mirror that captures the traffic lights. The charge of operating in a coordinated way this whole system is a software called “Google Chauffeur” that checks all the time possible failures to reduce the risk to a minimum. While for now is in a state of evidence should be able to drive more than 30,000 miles without errors.

Nissan Leaf: waiting for 2020

Google is not the only known manufacturers are also embracing. The most serious appears to be Nissan, who already have a standalone prototype of their model Leaf on the streets of Japan. The car can hold the line, take detours, passing slower cars, stop at traffic lights and cars obviously have detected nearby. They use a system similar to Google , though less expensive 6 laser surrounding the car and scanned the surrounding area, front and rear radar to detect cars, five cameras to read traffic signs (including speed limits) and 12 sonars. All controlled by software, of course. What are the differences with the Google system? That this is cheaper and does not use GPS maps , they consider something incomplete. It’s less powerful and is more intended for use on highways, where there are fewer curves and problematic situations. Nissan estimates that the system will arrive in 2020 and gradually will put in most of their models.

Mercedes S-Intelligent Drive: economic autonomy

Mercedes also has its autonomous vehicle test, a modified S500 that has traveled 103 km in Germany without problems. The good thing about this vehicle is that it uses laser technology face of the above, if not improving existing driver assistance systems . In this way a long-range radars located on the front of the vehicle can detect objects, moving cars and traffic in general. Four short-range radars detected around corners and nearby cars. A color camera on the windscreen detects traffic lights, and a rear camera helps locate the vehicle, and comparing the data obtained with Nokia maps (yes, do not use Google). A reliable system at a fraction of the price. Mind you, this system is not perfect, and that is not the intention of Mercedes. His idea is that by now the driver always this to take control if necessary, seek no total autonomy.

GM Cadillac: Is it your first?

Since last year, General Motors is showing a conduction system semi-autonomous and leading time polishing it’s called “Super Cruise”, an improvement of other existing technologies like lane keeping control. By pushing a button on the steering wheel handles camera search road lines and use them to guide the position of the car. Then through three radar detects objects stationary and moving, keeping his speed to not get too close to them. The technology complete with GPS, which tells the car that curves should take. This system, originally thought to highways could come next year to some models of the company, and make a reference to Cadillac.