Replas speed humps are an easy-to-install and very visible means of controlling traffic in parks and public driveways.  Maitland City Council recently installed a series of yellow speed humps  in the thoroughfares at Maitland Park, after speeding vehicles became an issue. Effective in reducing speeds in such areas, these speed humps are made from durable recycled plastic, each one equivalent to 4,000 plastic bags that would otherwise enter the landfill.