Louisville Metro Public Works is reminding citizens living in the Urban Services District about new garbage, recycling and yard waste collection routes that begin Monday.Residents living in the old city limits received a mailer from the department last month detailing changes to their scheduled garbage collection days for 2012. The changes affect more than 77,000 households and small businesses.Public works spokeswoman Lindsay English says residents will need to place their trash, recycling and yard waste at their normal collection site on the specific days of the week listed on the mailer."The real thing that will affect people are the days of the week they set out their items for collection. So either your recycling day or garbage pickup day, those may have changed for some folks within the Urban Services District," she says.Each year the city makes service revisions, but collection routes have not been analyzed or evaluated since 1994. The route changes will not affect collection in the central business district. English says the new route system will allow the department to make cost-savings, improve efficiency and effectiveness in the new year."We really looked at an in-depth analysis of the collection routes and sort of looked at what made sense for crews geographically. It’s just really a more efficient way for them to move through the routes they go trhoug everyday," she says.Residents can visit Metro Government’s website or call 311 to confirm their scheduled collection days. Public Works officials also plan to eliminate the delayed service following the Martin Luther King Day holiday to help save overtime.