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.

Here’s your Obama-jam advisory (L.A. Observed)

A good early look at some of the traffic impacts expected during the afternoon rush hour Monday due to President Obama’s fund-raising event at the House of Blues in West Hollywood. Here’s a post on The Source about bus service impacts.

Air pollution getting worse in national parks (Cal Watch)

The air in parks such as Sequioa/Kings Canyon, Yosemite and Joshua Tree (above) hasn’t been great in years. In the western Sierra, the problem is foul air from the San Joaquin Valley — some from as far away as the Bay Area — blowing into the mountains. Joshua Tree’s problem is that it’s straight east of most of you reading this. Recent data suggests the air is perhaps getting worse. There are some new regulations on the books that may help in future years, the big one being improve fuel efficiency for cars and trucks, which produce most of the ozone seeping into the parks.

While on that note, may I ask a question that often bothers me, a holder of an annual parks pass. If the parks have this kind of bad air quality, why do we allow monster motor homes that get well under 10 miles per gallon, to troll their roads?

Metro Rail: the promise and heartbreak of the recession (CityWatch)

Blogger Ken Alpern says that with prominent developers starving for cash due to the lousy economy, there’s still the opportunity to build regional transportation centers at future rail stops that will continue to serve everyone when times are better.

S.F. parking experiment takes national stage (Chronicle)

The city’s federally-funded experiment to lower traffic by micro-managing parking prices according to demand will be evaluated by the feds to see if it works. A lot of other cities hope to do the same thing, including L.A., so it will be interesting to see if raising and lowering parking prices according to demand really opens up spots and reduces the number of people circling around looking to park.