Good.

Houston is moving ahead with a plan to replace the light bulbs at all 2,381 of its traffic stops with energy-efficient bulbs that could save more than $4 million a year in electricity costs.

City Council approved a $16.4 million contract with Siemens Building Technologies Inc. on Wednesday.

Although the ''light-emitting diode," or LED, traffic signals will cost 16 times more than incandescent bulbs, they last six years longer, city officials said.

''We want to use energy-efficient lighting and make energy-efficient improvement for the same reason that Wal-Mart does, and that is to reduce costs and save money over the long run and to give Houston a competitive advantage," Mayor Bill White said.

The project is one of a handful of "green initiatives" in the works at City Hall, including establishing new energy-reducing building codes, installing solar panels, buying renewable power and hybrid vehicles and vastly stepping up city recycling programs.