Here’s a look at some of the transportation headlines gathered by the Metro Library. The full list of headlines is posted on the library’s blog. Don’t forget you can also follow the Metro Library on Facebook and Twitter.

Grand Avenue project seeks another delay (Los Angeles Business Journal)

The massive residential and commercial project that would fill a hole in the downtown skyline is asking for another construction delay, which would push back the start date until 2013. One issue is trying to secure a spot for an art museum for Eli Broad’s collection, the bigger issue is financing, or lack thereof. The Grand Avenue project, if it comes to fruition, would be right around the corner from the Civic Center’s subway stop, a convenience for anyone living in the first phase’s nearly 500 luxury condos and apartments.

A bullet train tunnel under Dodger Stadium? (The Eastsider LA)

The idea of routing the high-speed rail line from Union Station north alongside the Los Angeles River has become so contentious that now there’s some very, very preliminary discussion of avoiding the area altogether by putting the train in a tunnel under Elysian Park. No one is even estimating the cost yet, but tunneling is usually a pricey proposition and the current estimate of the cost of building high-speed rail between Anaheim and San Francisco is about $43 billion.

Movement to delay state’s greenhouse gas law gains steam (Streetsblog LA)

Tens of thousands of signatures have been gathered by a campaign that wants to stop AB 32 from being implemented until unemployment levels are significantly lowered. The law seeks to roll back the state’s greenhouse gas emissions to 1990 levels by 2020. Backers of a state ballot initiative say the law would cost jobs. Of course, many others argue that a push for more renewable energy sources could actually create more jobs. The signatures have been submitted to state officials who will determine if the initiative makes it to the ballot in November.