Electric bicycle range reaching the 100 mile markWhile a variety of styles were on display at this year’s Eurobike show, commuting ebikes were by far the most common. An electric drive makes sense on a commuter – you still get some exercise and don’t have to register it as a scooter, yet you also don’t arrive at your destination all hot and sweaty. As with all electric vehicles, however, range is always an issue. That is now being addressed, however, with ebikes that can travel up to 160 kilometers (99.4 miles) on one charge. If your commute is longer than that, you really might want to consider, you know... driving.
The tradeoff with batteries has always been one of weight vs. range. Batteries with less cells tend to be lighter and less expensive, so they’re generally the way to go, unless you want to travel longer distances. German manufacturer Kalkhoff has kept this in mind with its new line of ebikes, which was presented at this year’s show. The bicycles are available with your choice of an 8, 12 or 18 amp-hour battery. Riders who just use their bike for popping up to the store could go with the 8, while more serious riders could get up to 140 kilometers (87 miles) out of the 18.
Giant bicycles is employing a similar strategy with its 2011 Twist ebike. Instead of swapping batteries, however, the rider can add a second one, to extend their range up to 160 kilometers. This figure has, not surprisingly, been disputed in at least one review.
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Could the go-go-gadget straddling bus be headed for the U.S.?The giant Straddling Bus we reported on earlier this year could be headed to the U.S. This week the inventor of the bus, Mr. Song Youzhou, announced that his Shenzhen-based company is aiming to form partnerships or licensing agreements with specialized manufacturers to build the vehicle for the American market. Designed as a way to reduce traffic snarls without the need for much in the way of new infrastructure, the “Elevated High-Speed Bus” straddles two lanes of traffic allowing cars to drive underneath.
The bus is designed to travel on rails or special painted guidelines and each bus contains four compartments that can carry “hundreds of passengers”. With a top speed of 80 km/h (50 mph) and average speed of 40 km/h (25 mph) the mega buses should be able to outpace ordinary buses, which the company says have an average speed of 20 km/h (12 km/h) – although whether there’s enough clearance for them to literally overtake an ordinary bus is another matter.
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Official Google Blog: What we’re driving atLarry and Sergey founded Google because they wanted to help solve really big problems using technology. And one of the big problems we’re working on today is car safety and efficiency. Our goal is to help prevent traffic accidents, free up people’s time and reduce carbon emissions by fundamentally changing car use.
So we have developed technology for cars that can drive themselves. Our automated cars, manned by trained operators, just drove from our Mountain View campus to our Santa Monica office and on to Hollywood Boulevard. They’ve driven down Lombard Street, crossed the Golden Gate bridge, navigated the Pacific Coast Highway, and even made it all the way around Lake Tahoe. All in all, our self-driving cars have logged over 140,000 miles. We think this is a first in robotics research.
Our automated cars use video cameras, radar sensors and a laser range finder to “see” other traffic, as well as detailed maps (which we collect using manually driven vehicles) to navigate the road ahead. This is all made possible by Google’s data centers, which can process the enormous amounts of information gathered by our cars when mapping their terrain.
To develop this technology, we gathered some of the very best engineers from the DARPA Challenges, a series of autonomous vehicle races organized by the U.S. Government. Chris Urmson was the technical team leader of the CMU team that won the 2007 Urban Challenge. Mike Montemerlo was the software lead for the Stanford team that won the 2005 Grand Challenge. Also on the team is Anthony Levandowski, who built the world’s first autonomous motorcycle that participated in a DARPA Grand Challenge, and who also built a modified Prius that delivered pizza without a person inside. The work of these and other engineers on the team is on display in the National Museum of American History.
Safety has been our first priority in this project. Our cars are never unmanned. We always have a trained safety driver behind the wheel who can take over as easily as one disengages cruise control. And we also have a trained software operator in the passenger seat to monitor the software. Any test begins by sending out a driver in a conventionally driven car to map the route and road conditions. By mapping features like lane markers and traffic signs, the software in the car becomes familiar with the environment and its characteristics in advance. And we’ve briefed local police on our work.
According to the World Health Organization, more than 1.2 million lives are lost every year in road traffic accidents. We believe our technology has the potential to cut that number, perhaps by as much as half. We’re also confident that self-driving cars will transform car sharing, significantly reducing car usage, as well as help create the new “highway trains of tomorrow." These highway trains should cut energy consumption while also increasing the number of people that can be transported on our major roads. In terms of time efficiency, the U.S. Department of Transportation estimates that people spend on average 52 minutes each working day commuting. Imagine being able to spend that time more productively.
We’ve always been optimistic about technology’s ability to advance society, which is why we have pushed so hard to improve the capabilities of self-driving cars beyond where they are today. While this project is very much in the experimental stage, it provides a glimpse of what transportation might look like in the future thanks to advanced computer science. And that future is very exciting.
Posted by Sebastian Thrun, Distinguished Software Engineer
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