Tanya Snyder

Drivers turning left are a leading cause of pedestrian crashes in urban areas. Where drivers can only turn left with a green left-turn arrow, pedestrians are more protected. But when drivers are watching oncoming traffic for a chance to make their turn, they tend not to be as vigilant as they should to watch for pedestrians. In fact, 5 to 11 percent of drivers don’t look for pedestrians in the crosswalk at all.

What if cars came with a Surgeon General’s warning like the ones that come on cigarette packs: "Sitting in this seat could lead to obesity, diabetes, heart disease, depression, and divorce."

If Jane Doe rides her bike a mile to the post office and then back home, is it fair to assume she just avoided two miles of driving? And can we then assume that she prevented 2.2 pounds of carbon dioxide from being emitted?

Not one to back away from a terrible argument, CNN’s Anderson Cooper is sticking with his series exposing the “boondoggle” of federal high-speed rail funding. In a segment aired Monday night, he and reporter Drew Griffin hammered away yet again at their argument that high-speed rail has been a waste of money. Under the tagline “Keeping Them Honest,” Cooper and Griffin hope to raise public ire about the taxpayer money “dumped” into a program sold as high-speed rail but is really just moving slow trains “a little faster.”

What if peak oil doesn't take care of gas-guzzling by cutting off the supply?

Since 1970, the National Environmental Protection Act has required federal agencies to consider the impacts of their projects on air, water, and soil pollution -- but not on climate change.

It has a nice ring to it: using oil and gas revenue to shift transportation off oil and gas dependence. President Obama announced a plan to do just that on Friday -- but the details of his plan are disappointing if you want to see the conversation on clean transportation go beyond cars.

“In 2014, federal investment in surface transportation -- which is currently about $50 billion per year -- will drop to $6 billion or $7 billion. In one year.”

Now that the surface transportation bill fight is over -- at least for the moment -- transportation reformers are eying the expiration date of another key piece of legislation later this year. The reauthorization of the Passenger Rail Investment and Improvement Act of 2008 (PRIIA) could be a chance to make some needed changes to jump-start progress in the passenger rail system. Or it could be the next partisan battleground, making it a process as unnavigable as the lead-up to the passage of MAP-21.

As driving continues to stagnate in America, transit ridership keeps rising. Last year saw the second highest annual ridership since 1957, despite the fact that the nation's busiest transit systems had several days of blackout due to Superstorm Sandy.