Here is a look at some of the transportation headlines gathered by us and the Metro Library. The full list of headlines is posted on the library’s blog.

Could Expo II work be undone if Westside group wins appeal? (Curbed LA)

A group of Westside homeowners calling themselves Neighbors for Smart Rail aren’t giving up on their dream of stopping the Expo Line to Santa Monica. Their original suit lost earlier this year but they are appealing and say they’re in it to win it.

Grapevine train route could save $4 billion (Bakersfield.com)

Building high-speed rail over the Grapevine instead of through the Antelope Valley could save up to $4 billion, according to a July progress report released Wednesday.

Coming to an intersection near you: the traffic circle. Yes, even in L.A. (NPR)

Roundabouts in the U.S. are on the rise. In 2007, there were about 970; in 2011, there are more than 2,400. Here’s why.

Ten communities earn ‘walk friendly’ status (Transportation Issues Daily)

Ten communities have been recognized by the aptly named organization Walk Friendly Communities for their success in working to improve a wide range of conditions related to walking, including safety, mobility, access and comfort. Surprisingly enough, one of them is in car-loving So Cal.