A sample image of Philadelphia's proposed "green corridors." (Image: Lomo Civic Assn.)

Testifying on behalf of the U.S. Conference of Mayors, Nutter singled out his city's "complete streets" policy as a key element of the local revitalization that has attracted more private investment and new residents to Philadelphia:

Over the past five decades, Philadelphia lost jobs and residents. The pulls that caused people to leave our city and others like it were driven in part by government policies that valued highways over transit and new tract housing over older row homes. But, in recent years, Philadelphia has begun to witness a rebirth... people and jobs are moving in and private investments are being made. People again view our walkable neighborhoods and public transportation systems as assets to value and nurture.

Nutter also described a series of sustainable infrastructure projects that his city is prepared to launch once long-term funding is secured. The Senate climate bill sets up a new block grant program that would provide that long-term funding, directing money to metro areas for energy efficiency and conservation projects.

Among the Philadelphia proposals mentioned by Nutter were the city's "green corridors" program -- now in line for a $6 million pilot phase -- that would install landscaped sidewalks to collect storm water as well as new energy-efficient streetlights and traffic signals. A parallel effort, known as "green streets," would increase tree cover and install curb bump-outs with sidewalk planters to decrease heat-trapping.

"Our experience... is characteristic of so many cities that are moving forward with these investments," Nutter told the Senate environment committee, which will hear from more than two dozen witnesses today alone.

Republican witnesses offered a counterpoint to the urban experience, focusing almost exclusively on the high cost that regulating emissions would impose on traditional fossil fuel-burning industries.

"We are in favor of green jobs but not at the expense of the heartland, of red, white, and blue jobs," Bill Klesse, CEO of oil company Valero, told the environment panel.

Today's hearing can be followed live here, courtesy of the committee.

Desperate times call for desperate measures. As part of a city-wide campaign to reduce speeding, Philadelphia is marking 100 intersections with painted-on faux speed humps, like the ones pictured above. Britain's Telegraph reports:

"The goal is to change the mindset," said Philadelphia's chief traffic engineer Charles Denny.

"The driver sees this in the roadway, and they think that it's some protrusion up out of the roadway, and not a perfectly flat surface. So they slow down before they drive over it."

Accident data will be collected by the National Highway Traffic Safety Administration to see if the pioneering scheme actually does make the roads safer.

The virtual humps are the latest innovative measure adopted as an alternative to traditional "sleeping policemen", which have been criticised for damaging cars, slowing down emergency vehicles, and lowering fuel economy.

We admire the Engwichtian spirit here, but it's not immediately clear how much of an impact virtual speed humps will have on drivers who, for example, pass over them more than once. And they don't sound nearly as much fun as the laser crosswalk wall, or this one:

Rubber speed humps that inflate only when a speeding vehicle approaches have been successfully tested in London.

Streetsbloggers, what say you? 

Photo: Telegraph

With "Reality TV" producers plumbing the depths for every conceivable confrontational scenario, it's a wonder it took so long to strike the rich vein that is the put-upon motoring public. But thanks to "Parking Wars," the wait is over.

This new show, on the A&E Network, follows the Philadelphia Parking Authority as its agents ticket and boot scofflaw drivers while suffering abuse at every turn. Presented without commentary, save for cheesy effects and cheesier music, "Parking Wars" pits the irresistible force of the entitled motorist against the immovable object of the PPA bureaucracy. Caught in between are PPA employees, whose jobs are so psychologically taxing -- the possibility of physical confrontation is always as near as the next ticket -- they should qualify for combat pay. If the producers are rooting for one side over the other, it's hard to tell, as the "cha-ching" sound that comes with every levied fine is balanced by the portrayal of traffic agents as regular Joes working a thankless gig.

In this clip, watch what happens when a hothead who's racked up a "ton" of tickets gets booted after parking on the sidewalk. Then straight-talking agent Brian gives a lecture on civic courtesy to an irate woman as she stands watch for a double-parked friend.

"It's never their fault they're parked illegally," says Brian. "It's always my fault I happen to be there to write them up."

Video: MsYbf/YouTube