[
{"id":0,"description":"","grade":" ","scale":1},
{"id":1,"description":"residential","grade":"A","scale":2},
{"id":2,"description":"business","grade":"B","scale":3},
{"id":3,"description":"collector","grade":"C","scale":3},
{"id":4,"description":"arterial","grade":"D","scale":4},
{"id":5,"description":"expressway","grade":"E","scale":4},
{"id":6,"description":"freeway","grade":"F","scale":6},
{"id":7,"description":"CD road","grade":" ","scale":3.5}
]