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车道方向类型。
enum _ITC_LANE_DIRECTION_TYPE_{
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