The "usefulness" of the final product or the likeliness of success of a project, whether it's a bridge to nowhere or a bankrupt solar-panel company, "inevitably becomes a subordinate consideration."

Solar energy traffic warning yellow lamp and solar energy traffic single lamp are widely used on super high way, charge station, crossways, zebra line bridge and parking lot and other areas.

Merkel calls the extension a "bridge" until renewable sources of energy such as wind and solar power can produce more of Germany's power as it seeks to reduce dependence on coal.