Who will kill Project Driveway?

From News.com: Hydrogen fuel cell cars from Chevy hit the streets . “Chevrolet is in the midst of launching “Project Driveway,” an ambitious program where more than 100 fuel cell electric vehicles will be put in the hands of select consumers for the largest market test ever of its kind.”
Let’s hope this has a better impact than the General Motors EV1, their first electric vehicle, cancelled in 2003 just as the Hybrid market was taking off. This was featured in the film “Who Killed the Electric Car?”.

Traveler information from Probes

From the NY Times: Navigating With Feedback From Fellow Drivers . The article describe a GPS device from Dash Navigation in which every car is a probe, that reports information back other drivers in the club. This is an idea (hardly original I suspect) I analyzed in Levinson, D. (2002a) The Economics of Traveler Information from Probes. Public Works Management and Policy 6(4) pp 241-250 (April). The model in the paper implies probe information can be very good for detecting incidents, but will be almost useless for recurring congestion, because the lag in the data will be too long to take advantage of it.

Lower speed limits on residential streets in UK?

A new study reported by BBC: 20mph limit called for in towns
One of the interesting lines
“The Pacts report, called Beyond 2010 – a holistic approach to road safety in Great Britain, also recommends that all new residential developments should be subject to a “pint of milk test”.
This is whether a resident can reach a shop to buy a pint of milk in under 10 minutes without using a vehicle.”

Centers are edges

Centers are not nodes, in fact junctions are not nodes. In graphs (representation of transportation networks for modeling and analysis), nodes are aspatial representations of the intersection of links, which themselves are aspatial representations of the structure of network. However real nodes, i.e. centers and junctions, take space. As such they provide a spatial separation between areas that adjoin them. They serve as edges to adjoining areas (e.g. neighborhoods).
As Alfred Korzybski once said, “the map is not the territory”. Similarly, the graph is not the place. Network elements separate as they connect.

Shipping Container Architecture

Via Boing-boing: Making Light: Shipping container architecture. A really nice post about the use of excess shipping containers for housing and other purposes. With the disproportionately one-way flow of containerized commodities from Asia to the US, there are a surplus of containers landing on US shores (most are of course shipped back), the post details a number of articles about their reuse.

a blog about Networks and Places


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