Text this: Speed-based toll design for cordon-based congestion pricing scheme

  _____      ___     _    _    _    _     _____   
 / ____||   / _ \\  | || | || | || | ||  / ____|| 
/ //---`'  | / \ || | || | || | || | || / //---`' 
\ \\___    | \_/ || | \\_/ || | \\_/ || \ \\___   
 \_____||   \___//   \____//   \____//   \_____|| 
  `----`    `---`     `---`     `---`     `----`