METHOD FOR DETERMINING TOLL FEES IN A ROAD TOLL SYSTEM

• US 20130006726A1
• Filed: 06/05/2012
• Published: 01/03/2013
• Est. Priority Date: 06/29/2011
• Status: Active Grant

• Current Assignee: Kapsch TrafficCom AG (Datax Handelsgmbh)
• Original Assignee: Kapsch TrafficCom AG (Datax Handelsgmbh)
• Inventors: Tijink, Jasja, Kersten, Jan
• Granted Patent: US 8,732,000 B2
• Time in Patent Office: Days
• US Class Current: 705/13
• CPC Class Codes: G01S 19/12 wherein the cooperating elements are telecommunication base stations
• CPC Class Codes: G06Q 2240/00 Transportation facility access, e.g. fares, tolls or parking
• CPC Class Codes: G06Q 30/0284 Time or distance, e.g. usage of parking meters or taximeters
• CPC Class Codes: G07B 15/02 taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems G07B15/06 takes precedence; taximeters G07B13/00; parking meters per se G07F17/24; car rental systems per se G07B15/00
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: G08G 1/0116 from roadside infrastructure, e.g. beacons
• CPC Class Codes: G08G 1/017 identifying vehicles G08G1/015, G08G1/054 take precedence

Abstract

Method for determining toll fees for vehicles in a road toll system including vehicle-onboard units and positionally distributed beacons capable of communicating with the onboard units via radio signals. The method includes: providing a toll fee level and a validity time frame; retrieving an identifier of the onboard unit, the toll fee level and the validity time frame from the onboard unit as a data record; resetting the toll fee level, if the validity time frame has expired; increasing the toll fee level and storing the updated data record in the onboard unit and the beacon; transmitting a request for deletion of stored data records for this identifier to other beacons; transmitting the data record from the beacon to the central station, if no deletion request for the data record arrives within the validity time frame; and deleting the data record in the beacon.

Claims

1. A method for determining toll fees for vehicles in a road toll system including vehicle-supported onboard units with respective unambiguous identifiers and positionally distributed beacons with known locations, wherein the beacons localize passing onboard units to their beacon location to calculate position-related toll fees therefrom, and are capable of communicating with the onboard units via radio signals, the method comprising:

storing a toll fee level and a validity time frame for the toll fee level in a memory in the onboard unit;

in a beacon during the passing of the beacon by the onboard unit;

retrieving the identifier, the toll fee level and the validity time frame from the memory as a data record;

if the validity time frame has expired, resetting the toll fee level;

increasing the toll fee level to update the data record and storing the updated data record in the memory of the onboard unit and the beacon;

transmitting a request for deletion of stored data records for said identifier to other beacons;

if no request for deletion of the stored data record arrives from other beacons during the validity time frame, transmitting the data record from the beacon to the central station; and

deleting the data record in the beacon.

2. The method according to claim 1, wherein the beacons are connected to one another via a first network, and to a central station of the road toll system via a second network, and wherein the transmitting of the deletion request to the other beacons takes place via the first network and the transmitting of the data record to the central station takes place via the second network.

3. The method according to claim 1, further comprising:

storing a total counter and a section counter in the memory in the onboard unit;

in the beacon;

retrieving the total counter and the section counter from the onboard unit and placing them in the data record;

resetting the section counter when the validity time frame has expired;

incrementing the total counter and the section counter when updating the data record, and storing the data record in the onboard unit and the beacon; and

,

in the central station, if two data records with the same identifier arrive;

deleting a data record with a lower total counter, if the difference between the total counters of the two data records is different from the section counter of a data record with a higher total counter.

4. The method according to claim 3, wherein the toll fee level is incremented by a fixed value and the section counter is formed from the toll fee level divided by the said fixed value.

5. The method according to claim 1, wherein the toll fee level is incremented by a variable value that is deter mined based on data measured on a vehicle carrying the onboard unit.

6. The method according claim 1, wherein the toll fee level is incremented by a variable value determined based on data retrieved from the onboard unit.

7. The method according to claim 1, wherein when updating the data record, the validity time frame is set to a beacon-specific value.

8. The method according to claim 1, wherein an identifier and a time stamp of the beacon are stored in the memory of onboard unit along with the updated data record.

9. The method according to claim 8, wherein the identifiers and time stamps of beacons that were passed by the onboard unit since the last reset of the toll fee level are stored in the onboard unit in an encrypted transaction log, which is read out by said beacons and sent to the central station when the data record is transmitted.

10. The method according to claim 1, wherein a beacon communicates with a passing onboard unit via a radio connection with a limited coverage range and localizes the onboard unit to the radio coverage range as the beacon location.

11. The method according to claim 1, wherein the beacons are connected to one another via a first network, and to a central station of the road toll system via a second network, and wherein the transmitting of the deletion request to the other beacons takes place via the first network and the transmitting of the data record to the central station takes place via the second network, and wherein the method further comprises:

storing a total counter and a section counter in the memory of the onboard unit;

in the beacon;

retrieving the total counter and the section counter from the memory of the onboard unit and placing them in the data record;

resetting the section counter when the validity time frame has expired;

incrementing the total counter and the section counter when updating the data record, and storing the latter in the onboard unit and the beacon; and

in the central station, if two data records with the same identifier arrive;

deleting a data record with a lower total counter, if the difference between the total counters of the two data records is different from the section counter of a data record with a higher total counter.

12. The method according to claim 11, wherein the toll fee level is incremented by a fixed value and the section counter is formed from the toll fee level divided by the said fixed value.