Category: Transportation

A Greener Asphalt

Roads are often overlooked when it comes to the impact of cars on the environment, but we can’t ignore the roads have on the environment when discussing the practicality of cars. Asphalt is used to make roads and the process of creating asphalt is very energy intensive. In Vancouver, they are looking into ways to lower the negative impact of car infrastructure by making greener roads.

First, it allows asphalt to be heated at 20 to 40 degrees less than is necessary when using the traditional “hot mix” method. This reduces the amount of fuel necessary for the process, which in turn reduces the resulting greenhouse-gas production by as much as 50 per cent. Second, although there are other paving materials that have similar characteristics, they’re normally made of petroleum products. GreenMantra’s product comes from recycled plastics.

The wax is slightly more expensive than petroleum-based materials, but GreenMantra and the City of Vancouver are looking to bring down the cost by sourcing cheaper plastic. The price could also drop of its own accord, as GreenMantra begins to produce the stuff in greater quantities.

Read more at the Torontoist.

A Solar Powered Combustion Engine May Be in Your Future

This may sound counter-intutitive, but researches have begun a project to build an internal combustion engine (a common car engine) that runs off of solar power. Instead of using gas to ignite everything they want to heat water, add a dash of oil, to create a replacement to the overused pollution producing machine that is one of the leading causes of global warming.

To begin, mirrored parabolic solar collectors would be used to heat oil to a temperature of at least 400 to 700ºF (204 to 371ºC). This hot oil would then be injected into the cylinder chamber of the engine, just like gasoline ordinarily is. A few microdroplets of water would then also be introduced, which would turn to steam immediately upon contact with the hot oil.

The rapidly-expanding steam would serve the same purpose as exploding gas, driving the piston downward and turning the driveshaft. As the piston reached the bottom of its stroke, the spent steam and oil would exit the cylinder and be run through an oil/steam separator. They could then each be returned to their respective reservoirs, for re-use within the closed-loop system.

Read more at gizmag.

NYC Mayor Bloomberg Loves Bike Lanes

As Toronto fights smart planning and removes sustainable transportation infrastructure (indeed, paying hundreds of thousands of dollars to do so), New York City Mayor Bloomberg continues to espouse how great bike lanes are. In NYC they have added a lot of miles of bike lanes and found local business get more business, neighbourhoods become nicer, and more people can get around easier than they did before!

With the release by NYC DOT this week of a report showing the economic impact of their street projects, Bloomberg wove the economic case into his speech. “Talk to merchants everywhere we’ve put protected bicycle lanes [and pedestrian plazas]… They will tell you that business is dramatically better than it was before.”

Bloomberg called New York City’s legacy of mega-highway building by former DOT Commissioner Robert Moses a “mistake” because “we bulldozed neighborhoods.”

With the mistakes of the past fading from view, Bloomberg seems to understand the direct link between how streets are used and whether or not a city succeeds. “We’re using the streets in ways they had not been used in a long time,” he said, “Cyclists and pedestrians and bus riders are as important — if not, I would argue more important — than automobile riders.”

While he acknowledged that bike lanes “are always controversial” he defended them by noting that, “more and more people are using them.”

Looking ahead, Bloomberg said he has no plans of letting naysayers or controversies stop the progress. “Transportation… it’s not sexy and it certainly invites controversy,” he said, but added, “We’ve just got to keep developing, keep building, sensibly, with some plans and community involvement; but not stopping.”

As you can probably guess from my recent series of pro-bike lane posts, I am rather embarrassed by Toronto Mayor Rob Ford and his archaic approach to transit. When he’s out of office we may get to see some good news coming from Toronto again.

Read more here.

Free Transit Can Improve Cities

A small city in France had a problem: their transit system was failing and it was expensive to run. Their solution was to make ridership free for all, and it has turned out to be a success that other cities are looking into.

The motivations for making a transit system free are obvious. Increased ridership can relieve traffic, improve the environment, boost the system’s efficiency, give residents more spending money, help the poor, and rejuvenate central business districts. Unfortunately, the Châteauroux report contains little large-scale analysis of the effects of the system.

But as it turns out, the change nearly paid for itself. Forty-seven percent of bus-goers were already riding for free, and tickets covered only 14 percent of the city’s transit expenses. By slightly increasing the transit tax on big local businesses while eliminating the costs of printing, ticket-punching technology and the human infrastructure of ticket sales, the city turned a profit on the transit system in ’03, ’04, ’05, and ’07. Since ’08, returns have not been as positive, though the report attributes that to a shift in control from the city to the region.

Read more at The Atlantic Cities.

Thanks Mike!

Better Block is Bettering Cities

The Better Block initiative was started in Dallas, Texas as a rapid urban revitalization project of an underused, nearly abandoned block of  old buildings along an old streetcar line.  They project takes the “pop-up” business model to completely revitalise old city blocks with storefronts, community events, and cafés, and sustainable transportation (like bikes and streetcars)!   By combating out-of-date laws, re-purposing unused space, and connecting with engaged citizens, the Better Block has spread to multiple cities in the USA.

Watch an energized, exciting, and inspiring talk by Jason Roberts (who started The Better Block) from TEDxOU (Oklahoma University):

Thanks to urbanvelo and Upworthy for posting the original story!