\r\nThe three-section bidirectional Liberty vehicles will be equipped with batteries for catenary-free operation. The contract with Brookville includes an option for one additional vehicle.\r\nThe network, which was approved by the city council last month, will comprise two loop lines. Line 1 will be a 7.8km north-south loop connecting Bricktown and the business district with Automobile Alley and St Anthony Hospital Campus. Line 2 will form a 3.3km-east-west loop linking Bricktown with Chesapeake Energy Arena and Cox Convention Center. Construction is due to begin on the $US 132m project later this year.