Smart Traffic Lights Could Help Cars Save Gas

Earlier today, I stumbled upon a great article posted earlier today, by posted with credit given, and entitled Smart Traffic Lights Could Help Cars Save Gas that I would urge you all to read. I’ve included some little extracts in order to pique your interest!

The field is broadly known as V2V (for vehicle to vehicle) communications.   Traffic lights that “knew” more about upcoming vehicles could change dynamically based on their approach speeds, the mix of vehicle types (e.g. compact car, tractor-trailer truck), and the relative volumes of cars approaching from any direction.   This would let a stoplight “know” that one single vehicle was approaching from a given direction, and delay a regularly scheduled change long enough to let it pass through.   Two tractor-trailers traveling one after the other could signal their presence to the light, allowing it to stay green in one direction long enough to let the pair (which together extend the length of five or six cars) pass through.

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The theory is that a bus with 50 passengers can and should take priority over 20 single-occupant cars.   Denso’s model, however, goes well beyond the current signal-control algorithms–which use averages of traffic flow–to adjust cycle times and light extensions to get to the “state optimum” for any given set of upcoming vehicles.   The company has been testing both pre-empting red lights and extending green lights via transmitters onboard the vehicle and receivers in stoplights at its Vista, California, research facility.   Ultimately, not only vehicles but motorcycles and perhaps even bicycles might carry signaling transmitters to take their place in the data flow.   Since engine idling at stoplights produces gas mileage of 0 mpg, and accelerating up to speed uses far more fuel than maintaining a steady speed, the savings come not only in time but also in reduced fuel usage and lower emissions.   How would you feel about a transmitter on your car that “talked to traffic lights”? After all, on this one there’s a clear payback: Without such a transmitter, the stoplight couldn’t stay green to let you through because it wouldn’t know you’re approaching.   This article, written by John Voelcker, originally appeared on GreenCarReports.

Now, reading this got me thinking so I googled for more posts on the subject and found some more greats! i.e. Electronic Projects For Engineering Students by Exam Result, posted last week, over on Exam Results – India Results, Exam Result, Examination Results, University Results:

HOSPITAL CLEANING ROBOT 173. FIRE FIGHTING ROBOT 174. LINE TRACKING ROBOT 175. INDUSTRY MONITORING ROBOT 176.

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LASER BASED INTRUDER ALARM 186. ELECTRO MECHANICAL COUNTER 187. INVISIBLE INTRUDER ALARM 188. ALL ELECTRONIC THERMOSTAT FOR FRIDGE 189. DIGITAL THERMOMETER 190. 3 ½ DIGITAL VOLTMETER WITH LCD DISPLAY 191.

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PATIENT MONITORING SYSTEM USING ZIGBEE 254. UC BASED AIR QUALITY & CO2 DETECTION 255. ALCOHOL BREATH ANALYZER 256. AUTOMATION OF CONFERANCE HALL 257.

Yet another fine article on the subject came from tech on Tech Tips Tricks posted four days ago and entitled Traffic Light Powered By Sands Of Time which is also certainly worth reading.

Nothing brings road rage and traffic jams more often than the infamous stoplight. While it’s true that the simple design has stood the test of time, generations of drivers have found their collective patience tested. It is time to give the traffic light an overhaul, and what better way to do that than through a temporal metaphor? This concept hourglass traffic light not only replaces the three-lamp standard with a LED array, but also provides an interesting countdown in the form of that classic sand-filled pre-industrial timer. Drivers can watch the digital sands trickle down to the bottom bulb instead of wondering when their stationary agony will end. Found this post useful? Donations appreciated.

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