Along with the social economy development, the automobile quantity sharp growth, to the transportation control, the safety control, the charge management request also day by day enhance, using the electronic information technology realization security, the highly effective intelligent transportation becomes the traffic control the main development direction. The automobile car license number is the vehicles only "the status" marking, the car license automatic diagnosis technology may not make any modification in the situation realizes the automobile "the status" the automatic registration and the confirmation in the automobile, this technology already applied to the road charge, the stop control, the transportation induction, the transportation law enforcement, the road examination, the vehicles dispatch, the vehicles examination and so on each kind of situation. Below has enumerated several applications ways:

- The monitor reports to the police

Regarding brings into line with "the blacklist" vehicles, for example: Is issued a warrant for arrest the vehicles which or reports a loss, owes pays fee the vehicles, the year has not examined the vehicles, cause troubles escapes and violates regulations the vehicles and so on, only must input its car license number to the application system in, the car license identification equipment installment to the street intersection, the bayonet socket or by the law enforcement personnel which assigns carries as necessary according to the need laying aside, the system reads the knowledge possesses compares through the vehicles car license number and with the system in name list to, once discovered assigns the vehicles to send out immediately reports to the police the information. The system may the entire day non-stop run, not be able weary, wrong rate to be extremely low; May adapt the high speed travel vehicles; May exercise in the process in the vehicles to complete the task not to affect the normal transportation; In the entire surveillance process the driver cannot perceive, the secrecy is high. This kind of systematic application enormous enhancement law enforcement efficiency.

- Overspeed violates regulations to punish

The car license recognition technology union measured the fast equipment may use in the vehicles overspeed to violate regulations to punish, generally uses in the highway. The concrete application is: Establishes on the road measured the fast test point, grasps pats the overspeed vehicles and the recognition car license number, will violate regulations the vehicles car license number and the picture sends out each exportation; In each exportation establishment punishment spot, with the car license identification equipment recognition through the vehicles and the number with the overspeed vehicles number which already receives compared to, once the number is same namely starts the police to show the equipment notice law enforcement personnel to process. Compares with the traditional overspeed monitor way, this kind of application may save the police forces, reduces the law enforcement personnel's working strength, moreover safe, highly effective, is covert, the driver needed the time to remind oneself cannot overspeed, the enormous reduction because of the overspeed initiation accident.

- Vehicles difference management

The car license identification equipment installment to the access, records the vehicles the car license number, the difference time, and with the automatic valve, the parapet machine control union, realizes the vehicles automatic control. Applies may realize the automatic time charge to the parking lot, also may the automatic computation be possible to use the berth quantity and to produce the prompt, the realization stops the charge automatic control to save the manpower, to enhance the efficiency. Applies to the intelligent plot may automatically distinguish drives into the vehicles whether belongs to this plot, to non- internal vehicles realization automatic time charge. Also may unify in some unit this kind of applications with the vehicles dispatch system, automatically, objectively the minute book unit vehicles dispatch a vehicle the situation.

- Automatically allows to pass

Will assign the car license input system, the system automatically knowledge has read the Confucian classics the vehicles car license and the inquiry interior database. Regarding the vehicles system actuation electron gate which needs automatically to allow to pass or the parapet machine lets it pass, can produce the police regarding other vehicles systems to show, processes by the on-duty personnel. May use in the special unit (for example the military administrative district, security unit, key protection unit and so on), the highway bridge charge bayonet socket, the high-level residential district and so on.

- Highway charge management

When high speed road each access installment car license identification equipment, pulling-in of vehicle distinguishes the vehicles car license to store the entrance material the charge system, the vehicles arrives when the exportation distinguishes once more its car license and the basis car license information transfer entrance material, the union access material realization charge management. This kind of application may realize automatically costs and may prevent to cheat, has avoided draining which should receive money.

At present, the highway started to implement the networking charge, along with networking scope expansion, different vehicle type charge difference also more and more high, the driver will use the existing charge system the loophole to trade the card through the midway to carry on runs away the expense question more and more to be prominent, solves this kind of question basic method using the car license recognition technology.

- Computation vehicles travel time

May through calculate the vehicles in the traffic control system in some path average travel time to take judges this path to support stops up the condition a parameter. The installment car license identification equipment to the path 止点, the knowledge reads possesses passes on through the vehicles and the car license number the traffic guidance center, control center's management system management system acts according to these results to be possible to calculate the vehicles average travel time.

- Car license number automatic registration

The transportation supervising and managing department must process massively every day violates regulations the vehicles picture, generally by artificially recognizes the car license number input management system management system, this way work load big, wearily is easy to sentence by mistake. Uses the automatic diagnosis to be allowed to reduce the working strength also the large scale enhancement processing speed and the efficiency. This kind of merit prefers to use in the electronic police system, the path supervisory system and so on.