“…As there are hundreds of thousands kilometers of highways, it is not easy to monitor all vehicles at any time. Traditional TRV detection methods include: ultrasound based systems [ 3 , 7 , 8 , 9 ], capacitive sensor based systems [ 10 ], infrared sensors [ 11 ], laser and radar sensors [ 12 ], traffic video based systems [ 13 ], computer vision techniques [ 2 , 14 ], RFID technology [ 15 ], etc. The former vehicle detection sensors or monitoring cameras were always installed along the highway in fixed positions [ 16 ], there might be problems associated with this kind of measurement placement such as: (a) in tunnels or on multiple lane sections of the highways, where sensors might detect vehicles erroneously due to the reception of unnecessary reflected signals; (b) although thousands of sensors have been adopted, they still cannot cover all spots of the highways.…”