In Sept. 2005, eligible hybrid vehicles could use CA carpool lanes with only one occupant as an incentive to purchase them. The expiration date was extended by legislation twice, but DMV assures the 85,000 yellow decal owners it ends July 1.
The incentive program worked - there are now 423,180 hybrid vehicles registered in CA. And the $8 yellow decals added $4,000 to the value of the vehicle. It even enabled until last July a free ride over the $4 toll Bay Bridge.
For those solo motorists who wish to continue the 'carpool privilege', they can drive a zero-emission vehicle, e.g. Nissan Leaf with the white sticker, or come January, a plug-in hybrid electric vehicle, e.g. Chevy Volt, with the green sticker. Of course, they could always carpool or take the bus and not worry about getting a sticker which are suppose to expire in 2015 - so they say.
From SF Chronicle: John Burton defends Prius carpool-lane access: "The yellow-sticker program isn't over yet, and John Burton (the California Democratic Party chairman and former state Senate leader) is a crafty guy who knows more about the Capitol than anyone around. Don't be surprised if July 1 arrives, and Burton still is zipping from San Francisco to Sacramento in the carpool lane."
FULL STORY: Hybrids' yellow stickers program expires July 1

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss
The plan would reduce visitor accommodation by 25,% resulting in 1,900 jobs lost.

North Texas Transit Leaders Tout Benefits of TOD for Growing Region
At a summit focused on transit-oriented development, policymakers discussed how North Texas’ expanded light rail system can serve as a tool for economic growth.

Why Should We Subsidize Public Transportation?
Many public transit agencies face financial stress due to rising costs, declining fare revenue, and declining subsidies. Transit advocates must provide a strong business case for increasing public transit funding.

How to Make US Trains Faster
Changes to boarding platforms and a switch to electric trains could improve U.S. passenger rail service without the added cost of high-speed rail.

Columbia’s Revitalized ‘Loop’ Is a Hub for Local Entrepreneurs
A focus on small businesses is helping a commercial corridor in Columbia, Missouri thrive.

Invasive Insect Threatens Minnesota’s Ash Forests
The Emerald Ash Borer is a rapidly spreading invasive pest threatening Minnesota’s ash trees, and homeowners are encouraged to plant diverse replacement species, avoid moving ash firewood, and monitor for signs of infestation.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Santa Clarita
Ascent Environmental
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service