Having up-to-date equipment is important to sound traffic signal operations. The signal controller should be upgraded, at a cost of approximately $10,000 each, minimally every 10 years. Routine traffic signal timing updates cost $3,000 or less per intersection.
Facebook. 1  the brand name of a social media service and website, launched in 2004. 2  to communicate with (a person) or search for information about (a person) by using Facebook: My old boyfriend just Facebooked me. 3  to post on Facebook: I facebooked some photos of my cat.
A: Timeline is a section of a Facebook user's account that replaces the Profile and Wall pages, and merges them together. It shows the story of your life, as you choose to tell it or as Facebook has recorded it, in a visual, scrolling, reverse-chronologically ordered timeline.