Parking scofflaws have come up with several ways to thwart time restrictions in parking spaces — wipe the chalk off your tires, switch license plates (which we would never recommend). Those solutions are now out the window thanks to underground sensors that alert the authorities when you’ve overstayed your welcome.
By D.M. LevinePosted 04.05.2011 at 10:59 am 5 Comments
Telematics, a mash-up of telecommunications and informatics, is the science of scanning the world with wireless devices to extract data, sending this data to a computer network, and using the information to do anything from tracking packages to monitoring the highway speed of grocery trucks. UPS relies heavily on telematics, as does GM with its OnStar navigation system. The federal government could do a better job of capitalizing on the science, according to Michael J. Ravnitzky. So he started thinking about one of the largest mobile networks on Earth: the post office.
A system of self-organizing traffic lights could reduce congestion, according to European researchers. The key is allowing lights to switch from green to red in a decentralized, chaotic way, instead of following a regular programmed pattern.
By Mike HaneyPosted 04.10.2010 at 6:48 pm 3 Comments
It depends on where you live and what kind of unit you’re looking at. Most GPS devices that show traffic get their data from a handful of providers like Clear Channel and Navteq, which collect their information from numerous sources. News of a coming pileup reaches your dashboard as text data over FM airwaves and updates every five to 15 minutes. This system works great for major freeways in big cities, but neither the network nor the data services cover rural areas and side roads, and the FM signal can’t deliver much beyond basic information.