An intelligent transportation system fee deduction method to ensure the validity of ETC transactions

Abstract

The present invention provides an intelligent transportation system fee deduction method for ensuring the validity of ETC transactions, belonging to the technical field of intelligent transportation systems. The present invention enables the payment information file in the OBU and re-agrees on recording the relevant fields of the vehicle's travel path. The fields include the cumulative number of provinces passed, the cumulative amount receivable, the cumulative amount actually collected, the amount before the discount, the amount after the discount, the cumulative number of times the tag is not carded, and the encrypted summary. The activation of the payment information file in the OBU makes it easier for the ETC gantry system to record the vehicle's passage information and billing information into the payment information file in the OBU. When the vehicle exits the highway, the lane system can complete the validity judgment of the ETC transaction by extracting the key fields of the payment information file in the OBU. The present method aims to solve the problem that the prior art adopts the direct charging method, which lacks the function of integrating and comparing multiple pieces of information, and thus cannot judge the validity of the ETC transaction amount, resulting in ETC transaction omissions or exorbitant charges.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent transportation systems, and in particular relates to an intelligent transportation system fee deduction method for ensuring the validity of ETC transactions. Background Art

[0002] ETC, or Electronic Toll Collection (ETC), is a key component of intelligent transportation and is widely used in highways, parking lots, and urban congestion toll collection. Currently, ETC lane coverage at highway toll stations exceeds 97%. Vehicle users only need to visit an ETC issuing agency or a partner bank branch to apply for ETC. The OBU is installed on the vehicle's windshield and the ETC card is linked to a back-office account or prepaid tolls before activating the OBU. Once the vehicle passes through an ETC lane or mixed lane equipped with ETC at the toll station, it can proceed without stopping. Tolls are automatically deducted from the card, effectively achieving automatic toll collection. The ETC toll collection system takes no more than 300 milliseconds per vehicle, with a transaction area typically around 6 to 8 meters. It can support vehicles traveling at speeds of at least 20 km / h in toll lanes, and its capacity is 5 to 10 times that of manual toll collection lanes. The ETC toll collection system can enable paperless and cashless highway toll collection, fundamentally eliminating the loss of toll revenue and addressing the chaotic financial management issues associated with highway toll collection. In addition, the implementation of the ETC toll collection system can also save infrastructure costs and management costs.

[0003] At present, most ETC toll collection systems adopt a direct charging method when conducting transactions. Although they can judge the information of vehicles, OBUs and ETC cards, they do not have the function of integrating and comparing multiple pieces of information, and thus cannot judge the validity of the ETC transaction amount, resulting in ETC transaction fees being missed or exorbitant fees. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent transportation system deduction method that ensures the validity of ETC transactions, aiming to solve the problem that most ETC charging systems in the existing technology adopt a direct charging method when conducting transactions. Although they can judge the information of vehicles, OBUs and ETC cards, they do not have the function of integrating and comparing multiple pieces of information, and thus cannot judge the validity of the ETC transaction amount, resulting in ETC transaction omissions or exorbitant charges.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An intelligent transportation system fee deduction method for ensuring the validity of ETC transactions includes the following steps:

[0007] S1: The vehicle enters the ETC lane at the toll station, and the RSU detects the vehicle's OBU. The RSU reads the issuance information, vehicle information, entrance information, and payment information in the OBU and ETC card through the 5.8GHz channel and records them;

[0008] S2: The lane system calls the license plate recognition module to identify the current vehicle license plate information, stores the vehicle license plate recognition image and generates a vehicle license plate recognition pipeline and sends it to the upper system;

[0009] S3: The lane system performs device validity judgment on the OBU and ETC card, including entry information validity, OBU disassembly status, status list, recovery blacklist, dual-chip OBU card insertion status, card-signed license plate consistency, etc., and compares the license plate recognition result with the license plate information in the OBU and ETC card;

[0010] S4: The lane system extracts the key fields of the payment information file read in S1, checks whether the first three bytes are "0xAA0x29 0x00", whether the entry information is consistent with the entry information in the ETC card, and whether the cumulative number of provinces passed is greater than 0. It then verifies the legitimacy of the payment information file by authenticating the encrypted digest to determine the feasibility of the current transaction.

[0011] S5: The lane system extracts the information of the previous transaction gantry from the payment information file in S1 and brings it into the lane system billing module for path logic judgment to determine whether it is the physical previous gantry at the current exit toll station. Based on the judgment result, the lane system performs the fitting billing operation for the missed gantry and obtains the fitting receivable amount and actual collection amount.

[0012] S6: The lane system adds the calculation result in S5 to the cumulative receivable amount and the cumulative actually collected amount in the payment information file, thereby calculating the cumulative receivable amount and the cumulative actually collected amount of the current vehicle for this expressway passage;

[0013] S7: The lane system compares the cumulative actual amount collected in S6 with the minimum fee amount of the accessible path in the entire network. If it is within the compliance range specified by the operating rules, the ETC user card composite consumption transaction is carried out and the cumulative actual amount collected is displayed on the lane fee display. After the transaction is successful, the lane barrier is lifted to release the vehicle and it is determined whether the cumulative number of provinces passed extracted in S4 is greater than 1. If so, the payment information file is continued to read the provinces passed and the cumulative actual amount collected in each province. After the reading is successful, the zeroing operation is performed and the transaction flow is generated and sent to the superior system.

[0014] As a preferred solution of the present invention, in S1, the exit lane reads the issuance information, vehicle information and payment information files in the OBU, and reads the issuance information and entry information files in the ETC card, wherein the issuance information records information such as the validity period of the OBU or ETC card, the vehicle information records information such as the vehicle license plate number, license plate color, and vehicle model, the entry information file is written to record information such as the entry toll station and entry time when entering the highway, and the payment information file records the vehicle's driving and billing information to complete the initialization operation when entering the lane.

[0015] As a preferred solution of the present invention, in S2, the license plate recognition module is located on the ETC lane toll island, the automatic recognition module can recognize the vehicle license plate number and license plate color and send the license plate picture and license plate recognition result to the lane system, the lane system stores the license plate recognition picture and generates a license plate recognition flow and sends it to the upper system.

[0016] As a preferred solution of the present invention, in S3, the lane system performs equipment validity judgment of the OBU and ETC card, mainly including judging whether the current OBU has been disassembled, judging whether the current date is between the contract signing date and the contract expiration date in the OBU and ETC card, judging whether the OBU or ETC card is in the department-issued status list and the recovery blacklist, judging whether the OBU is in the card insertion state, judging whether the license plate information in the OBU and ETC card is consistent, etc. If any one of the items of the OBU and ETC card is not met, the vehicle will be intercepted and transferred to the toll collector for manual processing.

[0017] As a preferred solution of the present invention, in S4, the lane system extracts the key fields in the payment information file read by S1 and performs compliance verification. First, the payment information is summarized by the agreed summary algorithm and the calculation result is compared with the encrypted summary field in the payment information to ensure that the payment information content is legal and has not been tampered with. Then, it is determined whether the first 3 bytes of the payment information are "0xAA 0x29 0x00" and whether the cumulative number of provinces passed is greater than 0. If any item of the payment information is not met, the vehicle will be intercepted and transferred to the toll collector for manual processing.

[0018] As a preferred solution of the present invention, in S5, the lane system extracts the previous transaction gantry information in the payment information file in S1, and the lane system calls the billing module to restore the vehicle driving path, and determines whether the extracted previous transaction gantry information is the physical predecessor gantry of the current exit toll station. If not, the fitting billing operation of the missed gantry is performed and the fitted collection amount and actual collection amount are obtained.

[0019] As a preferred solution of the present invention, in S6, the lane system adds the calculation result in S5 to the cumulative receivable amount and the cumulative actual amount collected in the payment information file to obtain the cumulative receivable amount and the cumulative actual amount collected for the current vehicle's passage through the highway.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In this solution, when a vehicle enters the ETC lane at a toll station, the RSU detects the vehicle's OBU and reads and records the data in the OBU and ETC card through the 5.8GHz channel. The lane system calls the license plate recognition module to identify the current vehicle's license plate information and generates a vehicle license plate recognition flow to send to the upper-level system. The lane system judges the validity of the ETC device through the read OBU and ETC card information, and judges the consistency of the OBU, ETC card and vehicle license plate information. The lane system calculates the summary of the payment information through the agreed summary algorithm and compares the calculation result with the encrypted summary field in the payment information to ensure that the payment information content is legal and has not been tampered with. Then, the compliance of the key fields of the payment information is judged. If any item of the payment information does not meet the requirements, the vehicle is intercepted and transferred to the toll collector for manual processing. The lane system extracts the payment information from the The recorded last transaction gantry information is restored by calling the billing module to restore the vehicle's driving path and perform fitting billing operations for missed gantries to obtain the fitted collection amount and actual amount, which are added to the cumulative receivable amount and cumulative actual amount in the payment information to obtain the cumulative receivable amount and cumulative actual amount of the current vehicle's highway passage. The lane system performs compliance verification on the cumulative actual amount according to the operating rules, intercepts non-compliant vehicles and transfers them to manual processing, and deducts the cumulative actual amount for compliant vehicles through compound consumption and controls the lane fee display to display the deduction information. After the vehicle is successfully deducted, the lane system lifts the lane railing and determines whether the cumulative number of provinces passed is greater than 1. If the cumulative number of provinces passed is greater than 1, the lane system continues to read the cumulative payment information of each province passed. After reading, it generates a transaction flow and sends it to the superior system.

[0022] 2. In this solution, the lane system compares vehicle information to determine the consistency of the OBU, ETC card and vehicle license plate information, checks whether the OBU has been disassembled, whether the card has been inserted, whether it is not within the validity period, and verifies whether the current ETC vehicle is on the ministry-issued status list and the recovery blacklist. The lane system calculates the data summary through the agreed summary algorithm and verifies it with the encrypted summary in the payment information in the OBU to ensure that the read data is compliant and not tampered with. The lane system verifies the vehicle's driving path and performs path restoration and missed fee replenishment by calculating the cumulative number of provinces passed, the previous transaction gantry information, the cumulative receivable amount, the cumulative actual amount collected and other data in the payment information. The vehicle's payment information is determined through multiple comparisons and verifications and path calculations, which can effectively prevent ETC transaction missed fees or sky-high fees. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is the main flow chart of the present invention;

[0025] Figure 2 This is a principle block diagram of the vehicle in the present invention;

[0026] Figure 3 This is a block diagram of the ETC lane in a toll station of the present invention; DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figure 1-3 , the present invention provides the following technical solutions:

[0030] An intelligent transportation system fee deduction method for ensuring the validity of ETC transactions includes the following steps:

[0031] S1: The vehicle enters the ETC lane at the toll station, and the RSU detects the vehicle's OBU. The RSU reads the issuance information, vehicle information, entrance information, and payment information in the OBU and ETC card through the 5.8GHz channel and records them;

[0032] S2: The lane system calls the license plate recognition module to identify the current vehicle license plate information, stores the vehicle license plate recognition image and generates a vehicle license plate recognition pipeline and sends it to the upper system;

[0033] S3: The lane system performs device validity judgment on the OBU and ETC card, including entry information validity, OBU disassembly status, status list, recovery blacklist, dual-chip OBU card insertion status, card-signed license plate consistency, etc., and compares the license plate recognition result with the license plate information in the OBU and ETC card;

[0034] S4: The lane system extracts the key fields of the payment information file read in S1, checks whether the first three bytes are "0xAA0x29 0x00", whether the entry information is consistent with the entry information in the ETC card, and whether the cumulative number of provinces passed is greater than 0. It then verifies the legitimacy of the payment information file by authenticating the encrypted digest to determine the feasibility of the current transaction.

[0035] S5: The lane system extracts the information of the previous transaction gantry from the payment information file in S1 and brings it into the lane system billing module for path logic judgment to determine whether it is the physical previous gantry at the current exit toll station. Based on the judgment result, the lane system performs the fitting billing operation for the missed gantry and obtains the fitting receivable amount and actual collection amount.

[0036] S6: The lane system adds the calculation result in S5 to the cumulative receivable amount and the cumulative actually collected amount in the payment information file, thereby calculating the cumulative receivable amount and the cumulative actually collected amount of the current vehicle for this expressway passage;

[0037] S7: The lane system compares the cumulative actual amount collected in S6 with the minimum fee amount of the accessible path in the entire network. If it is within the compliance range specified by the operating rules, the ETC user card composite consumption transaction is carried out and the cumulative actual amount collected is displayed on the lane fee display. After the transaction is successful, the lane barrier is lifted to release the vehicle and it is determined whether the cumulative number of provinces passed extracted in S4 is greater than 1. If so, the payment information file is continued to read the provinces passed and the cumulative actual amount collected in each province. After the reading is successful, the zeroing operation is performed and the transaction flow is generated and sent to the superior system.

[0038] In a specific embodiment of the present invention, a vehicle enters the ETC lane at a toll station, and the RSU detects the vehicle's OBU. The RSU reads and records the data information in the OBU and ETC card through a 5.8GHz channel. The lane system calls the license plate recognition module to identify the current vehicle's license plate information and generates a vehicle license plate recognition flow to send to the upper-level system. The lane system judges the validity of the ETC device through the read OBU and ETC card information, and judges the consistency of the OBU, ETC card and vehicle license plate information. The lane system calculates the summary of the payment information through an agreed summary algorithm and compares the calculation result with the encrypted summary field in the payment information to ensure that the payment information content is legal and has not been tampered with. Then, the compliance of the key fields of the payment information is judged. If any item of the payment information does not meet the requirements, the vehicle is intercepted and transferred to the toll collector for manual processing. The lane system extracts the payment information. The previous transaction gantry information recorded in the information is restored by calling the billing module to restore the vehicle's driving path and perform fitting billing operations for missed gantries to obtain the fitted collection amount and actual amount, which are added to the cumulative receivable amount and cumulative actual amount in the payment information to obtain the cumulative receivable amount and cumulative actual amount of the current vehicle's highway passage. The lane system performs compliance verification on the cumulative actual amount according to the operating rules, intercepts non-compliant vehicles and transfers them to manual processing, and deducts the cumulative actual amount for compliant vehicles through compound consumption and controls the lane fee display to display the deduction information. After the vehicle is successfully deducted, the lane system lifts the lane railing and determines whether the cumulative number of provinces passed is greater than 1. If the cumulative number of provinces passed is greater than 1, the lane system continues to read the cumulative payment information of each province passed. After reading, it generates a transaction flow and sends it to the superior system.

[0039] Specifically, in S1, the exit lane reads the issuance information, vehicle information and payment information files in the OBU, and reads the issuance information and entry information files in the ETC card, wherein the issuance information records information such as the validity period of the OBU or ETC card, and the vehicle information records information such as the vehicle license plate number, license plate color, and vehicle model. When entering the highway, the entry information file is written to record information such as the entry toll station and entry time. The payment information file records the vehicle's driving and billing information and completes the initialization operation when entering the lane.

[0040] In a specific embodiment of the present invention, the RSU is located in the ETC lane of the toll station, and is generally mounted directly above the ETC lane through a gantry or L-pole. The RSU interacts with the OBU for data through 5.8GHz radio frequency technology. The lane system has logic processing, flow upload and data storage functions. The OBU, ETC card and license plate recognition data are bound. The OBU, ETC card information and license plate recognition information read by the RSU will be stored and uploaded in the form of transaction flow and transaction log.

[0041] Specifically, in S2, the license plate recognition module is located on the ETC lane toll island. The automatic recognition module can recognize the vehicle license plate number and license plate color and send the license plate image and license plate recognition results to the lane system. The lane system stores the license plate recognition image and generates a license plate recognition flow to send to the upper system.

[0042] In a specific embodiment of the present invention, the license plate recognition module can automatically identify the license plate number and license plate color information of the currently traveling vehicle. The lane system uses the identification information to compare with the vehicle information read from the OBU and ETC card to verify the legality of the vehicle.

[0043] Specifically, in S3, the lane system performs equipment validity judgment on the OBU and ETC card, mainly including judging whether the current OBU has been disassembled, judging whether the current date is between the contract signing date and the contract expiration date in the OBU and ETC card, judging whether the OBU or ETC card is in the department-issued status list and the recovery blacklist, judging whether the OBU is in the card insertion state, judging whether the license plate information in the OBU and ETC card is consistent, etc. If any of the items of the OBU and ETC card are not met, the vehicle will be intercepted and transferred to the toll collector for manual processing.

[0044] In a specific embodiment of the present invention, the lane system makes a real-time judgment on the equipment validity of the OBU and ETC card, intercepts abnormal vehicles such as OBU disassembly, OBU without card inserted, no valid entry information, inconsistent vehicle information in the OBU and ETC card, and OBU and ETC card not within the validity period, and prevents the occurrence of cheating and evasion of fees.

[0045] Specifically, in S4, the lane system extracts the key fields in the payment information file read by S1 and performs compliance verification. First, the payment information is summarized by the agreed summary algorithm and the calculation result is checked with the encrypted summary field in the payment information to ensure that the payment information content is legal and has not been tampered with. Then, it is determined whether the first 3 bytes of the payment information are "0xAA 0x29 0x00" and whether the cumulative number of provinces passed is greater than 0. If any of the payment information does not meet the requirements, the vehicle will be intercepted and transferred to the toll collector for manual processing.

[0046] In a specific embodiment of the present invention, the encrypted summary field in the payment information file is verified to ensure that the read information is authentic, valid and not tampered with. The key fields of the payment information file are checked to screen out abnormal passing vehicles and transfer them to manual processing to prevent the occurrence of fare evasion.

[0047] Specifically, in S5, the lane system extracts the previous transaction gantry information from the payment information file in S1, and the lane system calls the billing module to restore the vehicle's driving path, and determines whether the extracted previous transaction gantry information is the physical predecessor gantry of the current exit toll station. If not, the lane system performs the fitting billing operation of the missed gantry and obtains the fitted collection amount and actual collection amount.

[0048] In a specific embodiment of the present invention, the lane system fits and restores the vehicle's driving path, and performs collection operations on the missed gantries in the path, thereby ensuring the consistency of the toll amount for the same type of vehicle on the same trip.

[0049] Specifically, in S6, the lane system adds the calculation result in S5 to the cumulative receivable amount and the cumulative actually collected amount in the payment information file to obtain the cumulative receivable amount and the cumulative actually collected amount of the current vehicle for this highway passage.

[0050] In a specific embodiment of the present invention, the lane system obtains the cumulative actually collected amount and the cumulative actually collected amount of the corresponding vehicle driving path by adding the receivable amount and the actually collected amount of the fitted supplementary collection to the payment information.

[0051] Specifically, in S7, the cumulative actual collection amount obtained in S6 is judged for compliance based on the operating rules to prevent missed collection or exorbitant charges. The lane system uses the cumulative actual collection amount calculated by S6 for compound transaction consumption and issues a deduction reminder through the lane fee display. After the vehicle is successfully deducted, the lane system lifts the lane barrier and determines whether the cumulative number of provinces through which the vehicle passes is greater than 1. If the cumulative number of provinces through which the vehicle passes is greater than 1, the lane system continues to read the cumulative payment information of each province through which the vehicle passes. After reading, it generates a transaction flow and sends it to the superior system.

[0052] In a specific embodiment of the present invention, the lane system verifies the vehicle toll deduction amount according to the operating rules to prevent missed charges and sky-high charges, thereby ensuring the legitimate rights and interests of highway owners and vehicle users. When the toll is completed, the lane system will provide a toll reminder through the lane toll amount display. At the same time, for vehicles passing through multiple provinces, it will continue to read the cumulative payment information of each province it has traveled through, thereby facilitating the multi-provincial splitting of tolls and reducing the workload of clearing and settlement.

[0053] The working principle and usage process of the present invention are as follows: when a vehicle enters the ETC lane at a toll station, the RSU detects the vehicle's OBU, and the RSU reads and records the data information in the OBU and ETC card through the 5.8GHz channel. The lane system calls the license plate recognition module to identify the current vehicle's license plate information and generates a vehicle license plate recognition flow to send to the upper-level system. The lane system judges the validity of the ETC device through the read OBU and ETC card information, and judges the consistency of the OBU, ETC card and vehicle license plate information. The lane system calculates the summary of the payment information through the agreed summary algorithm and checks the calculation result with the encrypted summary field in the payment information to ensure that the payment information content is legal and has not been tampered with. Then, the compliance of the key fields of the payment information is judged. If any item of the payment information does not meet the requirements, the vehicle is intercepted and transferred to the toll collector for manual processing. The lane system extracts the payment information. The previous transaction gantry information recorded in the toll information is used to restore the vehicle's driving path by calling the billing module and perform fitting billing operations on missed gantries to derive the fitted collection amount and the actual amount collected, which is then added to the cumulative receivable amount and cumulative actual amount collected in the payment information to derive the cumulative receivable amount and cumulative actual amount collected for the current vehicle's passage through the highway. The lane system performs compliance verification on the cumulative actual amount collected based on the operating rules, intercepts non-compliant vehicles and transfers them to manual processing, deducts the cumulative actual amount collected from compliant vehicles through compound consumption, and controls the lane fee display to display the deduction information. After the vehicle is successfully deducted, the lane system lifts the lane barrier and determines whether the cumulative number of provinces passed is greater than 1. If the cumulative number of provinces passed is greater than 1, the lane system continues to read the cumulative payment information of each province passed. After reading, it generates a transaction flow and sends it to the superior system.

[0054] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An intelligent transportation system fee deduction method for ensuring the validity of ETC transactions, characterized by: The following steps are included: S1: The vehicle enters the ETC lane at the toll station, and the RSU detects the vehicle's OBU. The RSU reads the issuance information, vehicle information, entrance information, and payment information in the OBU and ETC card through the 5.8GHz channel and records them; S2: The lane system calls the license plate recognition module to identify the current vehicle license plate information, stores the vehicle license plate recognition image and generates a vehicle license plate recognition pipeline and sends it to the upper system; S3: The lane system performs device validity judgment on the OBU and ETC card, including entry information validity, OBU disassembly status, status list, recovery blacklist, dual-chip OBU card insertion status, card-signed license plate consistency, etc., and compares the license plate recognition result with the license plate information in the OBU and ETC card; S4: The lane system extracts the key fields of the payment information file read in S1, checks whether the first three bytes are "0xAA 0x290x00", whether the entry information is consistent with the entry information in the ETC card, and whether the cumulative number of provinces passed is greater than 0. It then verifies the legitimacy of the payment information file by authenticating the encrypted digest to determine the feasibility of the current transaction. S5: The lane system extracts the information of the previous transaction gantry from the payment information file in S1 and brings it into the lane system billing module for path logic judgment to determine whether it is the physical previous gantry at the current exit toll station. Based on the judgment result, the lane system performs the fitting billing operation for the missed gantry and obtains the fitting receivable amount and actual collection amount. S6: The lane system adds the calculation result in S5 to the cumulative receivable amount and the cumulative actually collected amount in the payment information file, thereby calculating the cumulative receivable amount and the cumulative actually collected amount of the current vehicle for this expressway passage; S7: The lane system compares the cumulative actual amount collected in S6 with the minimum fee amount of the accessible path in the entire network. If it is within the compliance range specified by the operating rules, the ETC user card composite consumption transaction is carried out and the cumulative actual amount collected is displayed on the lane fee display. After the transaction is successful, the lane barrier is lifted to release the vehicle and it is determined whether the cumulative number of provinces passed extracted in S4 is greater than 1. If so, the payment information file is continued to read the provinces passed and the cumulative actual amount collected in each province. After the reading is successful, the zeroing operation is performed and the transaction flow is generated and sent to the superior system.

2. The intelligent transportation system fee deduction method for ensuring the validity of ETC transactions according to claim 1, characterized in that: In S1, the exit lane reads the issuance information, vehicle information and payment information files in the OBU, and reads the issuance information and entry information files in the ETC card. The issuance information records the validity period of the OBU or ETC card, and the vehicle information records the vehicle license plate number, license plate color, vehicle model and other information. The entry information file is written to record the entry toll station, entry time and other information when entering the highway. The payment information file records the vehicle's driving and billing information and completes the initialization operation when entering the lane.

3. The intelligent transportation system fee deduction method for ensuring the validity of ETC transactions according to claim 1, characterized in that: In S2, the license plate recognition module is located on the ETC lane toll island. The automatic recognition module can recognize the vehicle license plate number and license plate color and send the license plate image and license plate recognition results to the lane system. The lane system stores the license plate recognition image and generates a license plate recognition flow to send to the upper system.

4. The intelligent transportation system fee deduction method for ensuring the validity of ETC transactions according to claim 1, characterized in that: In S3, the lane system performs equipment validity judgment on the OBU and ETC card, mainly including judging whether the current OBU has been disassembled, judging whether the current date is between the contract signing date and the contract expiration date in the OBU and ETC card, judging whether the OBU or ETC card is in the department-issued status list and the recovery blacklist, judging whether the OBU is in the card-inserted state, judging whether the license plate information in the OBU and ETC card is consistent, etc. If any of the items on the OBU and ETC card are not met, the vehicle will be intercepted and transferred to the toll collector for manual processing.

5. The intelligent transportation system fee deduction method for ensuring the validity of ETC transactions according to claim 1, characterized in that: In S4, the lane system extracts the key fields in the payment information file read by S1 and performs compliance verification. First, the payment information is summarized using the agreed summary algorithm and the calculation result is compared with the encrypted summary field in the payment information to ensure that the payment information content is legal and has not been tampered with. Then, it is determined whether the first 3 bytes of the payment information are "0xAA 0x290x00" and whether the cumulative number of provinces passed is greater than 0. If any item of the payment information is not met, the vehicle will be intercepted and transferred to the toll collector for manual processing.

6. The intelligent transportation system fee deduction method for ensuring the validity of ETC transactions according to claim 1, characterized in that: In S5, the lane system extracts the previous transaction gantry information from the payment information file in S1, and calls the billing module to restore the vehicle's driving path, and determines whether the extracted previous transaction gantry information is the physical predecessor gantry of the current exit toll station. If not, the lane system performs the fitting billing operation for the missed gantry and obtains the fitted collection amount and actual collection amount.

7. The intelligent transportation system fee deduction method for ensuring the validity of ETC transactions according to claim 1, characterized in that: In S6, the lane system adds the calculation result in S5 to the cumulative receivable amount and the cumulative actually collected amount in the payment information file to obtain the cumulative receivable amount and the cumulative actually collected amount of the current vehicle for this highway passage.

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