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We may never get back to the days where state speed limits were simply as fast as was "reasonable and prudent," but the wide-open state of Montana seems to at least be making an attempt, with state legislators considering an 80- or even 85-mile-per-hour speed limit. In other news, Autoblog's editorial office is preparing to relocate to Billings.

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Some states raising speed limits for safety sake

How does driving 80 mph, legally, sound?

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Birds flying on roads with higher speed limits take off quicker

Birds are doing something most humans find difficult: obeying speed limits.

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The 'road rage' bill now goes to governor

Drivers in Florida rejoice! It may have taken a few years of trying, but the state legislature has passed a bill that would make it illegal for motorists to drive too slowly in passing lanes.

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A study found that the freeways actually became safer with the faster speed limit

The Utah Department of Transportation released a study that showed increasing the speed limit on some parts of freeways from 75 mph to 80 mph may actually be a good thing, according to to Fox 13 Now.

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Safety groups fret over possible upswing in danger to drivers

The highest speed limit in the United States can now be found on a central Texas highway. On Thursday, transportation officials in the state approved an 85-mile-per-hour speed limit along a 41-mile stretch of State Highway 130

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Online video may be his undoing

A driver in northwest Montreal may be in trouble with the police – if they can catch him.

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Texas DOT may allow speeds of 85 mph between San Antonio and Austin

A new highway that connects two of Texas' biggest cities could contain the fastest posted speed limit in the United States.

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It's probably a safe bet that many Autoblog readers find speed limits very annoying in general. To that end, it turns out that a significant number of limits in Michigan may, in fact, be illegal. Researchers have known for years that when it comes to safety, speed limits should be set at the 85th percentile traffic flow speed. The reality is that most drivers move along at what they consider to be a safe speed for the conditions regardless of the posted limit. To minimize accidents, the limit sh

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A study out of the Netherlands by consulting firm CE Delft predicts that a strictly enforced 80 kilometer per hour (50 mile per hour) highway speed limit could slash CO2 emissions by 30 percent. The study is careful to acknowledge that the results only apply to the Netherlands and that results will vary significantly elsewhere.

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When the Utah DOT raised the speed limit on two pieces of I-15 from 75 mph to 80 mph, it discovered that driving habits didn't change. When the limit was 75 mph, the Utah DoT found that drivers were going between 81 and 85 mph. And now that the maximum limit is 80 mph, it has found that drivers are going between 83 and 85 mph.

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When it comes to cars, they do things a bit differently in Canada. While our neighbor to the north has long been considered more progressive than the U.S., it was the United States that introduced pollution controls, and until recently, Canada never actually had any rules requiring them. The same goes for fuel efficiency standards. A couple of years ago, the government of Ontario passed a law that could result in automatic confiscation of your car if you exceeded a speed limit by more than 50 km

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In 1995, highway speed limits increased from a nation-wide 55 mph to 65, 70 or 75 mph, depending on the state, and most Americans were thrilled. The obvious benefit of the change was people could legally get to where they wanted to go, but according to a new study, the downside has been an alarming increase in accidents and deaths.

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Transport for London plans to begin a six-month trial of a new technology that will artificially limit the top speeds of taxis, buses and government fleet vehicles. Called Intelligent Speed Adaptation (ISA), the system will keep track of speed limits all over London and prevent operators from accelerating past that legal limit. The device is capable of slowing the vehicle down regardless of the driver's wishes.

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Transport for London has just begun testing a new technology that will artificially limit the top speeds of taxis, buses and government fleet vehicles. Called Intelligent Speed Adaptation (ISA), the system will keep track of speed limits all over London and will prevent operators from accelerating past that legal limit. The device is capable of slowing the vehicle down regardless of the driver's wishes.

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The transit authorities in Catalonia, Spain have decided to take the drastic speed limit on the accesses to the city of Barcelona to the next level. Similar to plans in other cities, like Rotterdam in the Netherlands, highways in Barcelona will now have variable speed limits. A smart system with light panel indicators will regulate speed on the C31 and C32 highways: the higher the pollution levels, the lower the speed limit will be. The system also applies a dynamic approach depending on congest

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Recently, we reported on so-called eco-towns in the U.K. which have imposed 15 mile per hour speed limits in an effort to reduce pollution. We're pretty sure that their end-goal is to remove vehicles from the roads entirely, not simply forcing them to slow down. It seems that other towns are lowering speed limits for a completely different reason: safety. The city of Portsmouth has recently become the first city in Britain to impose a 20 mile per hour speed limit for nearly every residential str

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There are plans in the works in the U.K. to create a new type of housing settlement called eco-towns. There are expected to be five eco-towns built by 2016, scaling up to 10 by 2020 with populations of around 5,000 to 20,000. A unique feature of these eco-towns will be the very low 15 mile per hour speed limit leading into the downtown area. The downtown will allow no cars at all.

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Autocar is reporting that the European Parliament will consider a proposal this fall to ban all cars capable of reaching speeds over 101 mph. The proposal can be traced back to a man named Chris Davies, a Liberal Democrat Member of the European Parlaiment for the North West of England. Davies argues (try not to laugh while reading his words) that "between 1994 and 2004 the power of new cars went up by 28 per cent, making them a lot heavier, and so increasing the amount of CO2 they put out, even

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