Many streetlights and municipal outdoor lighting projects took place after the pilot projects .
`` The United States Department of Energy made several reports available on the results of many pilot projects for municipal outdoor lighting , U . S. Department of Energy , Solid-State Lighting GATEWAY Demonstration Results ( Retrieved 16 July 2010 ) and many additional streetlight and municipal outdoor lighting projects soon followed.for example , Seattle : `` '' Seattle Picked to Lead National Effort on LED Street Lights '' '' ( Retrieved 16 July 2010 ) ; Scottsdale : `` '' LED Streetlight Installation '' '' ( Retrieved 2010-07-16 ) ; Ann Arbor : LED street lights ( Retrieved 2010-07-16 )   ''