8 more parks lighted up in 2009 for DUN Subang Jaya, with 10 more to go. More details about it here:
http://hannahyeoh.blogspot.com/2010/04/more-parks-lighted-up-in-2009.html

Key benefits:
1. Parks are usable at night by the public, for night walks after dinner, etc
2. Security - its a deterrent to thieves to use park as a stakeout/hideout.