Enumerate the lane direction type.
enum{
ITC_LANE_DIRECTION_UNKNOW = 0,
ITC_LANE_LEFT = 1,
ITC_LANE_STRAIGHT = 2,
ITC_LANE_LEFT_STRAIGHT = 3,
ITC_LANE_RIGHT = 4,
ITC_LANE_LEFT_RIGHT = 5,
ITC_LANE_RIGHT_STRAIGHT = 6,
ITC_LANE_LEFT_RIGHT_STRAIGHT = 7,
ITC_LANE_LEFT_WAIT = 9,
ITC_LANE_STRAIGHT_WAIT = 10,
ITC_LANE_FORWARD = 11,
ITC_LANE_BACKWARD = 12,
ITC_LANE_BOTHWAY = 13,
ITC_LANE_STRAIGHT_WAIT_RIGHT = 14
}ITC_LANE_DIRECTION_TYPE
Unknown.
Turn left.
Go straight.
Turn left and go straight.
Turn right.
Turn left and turn right.
Turn right and go straight.
Turn left, turn right and go straight.
Turn left and wait.
Go straight and wait.
Drive forward.
Drive backward.
Drive bidirectionally.
Go straight and wait, and turn right.