Traffic system, especially public local passenger traffic system

• US 4,069,888 A
• Filed: 04/23/1976
• Issued: 01/24/1978
• Est. Priority Date: 04/24/1975
• Status: Expired due to Term

• Current Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Inventors: Strifler, Paul, Wolters, Gerhard
• Primary Examiner(s): Peters, Jr., Joseph F.
• Assistant Examiner(s): Silverstrim, John P.
• Application Number:
  US05/679,684
• Time in Patent Office: 641 Days
• Field of Search: 180/98, 343/7 VC, 343/7 VM, 343/7 TA, 340/1 T, 340/1 R, 340/40, 318/587, 318/581
• US Class Current: 180/169
• CPC Class Codes: B62D 1/265 especially adapted for guiding road vehicles carrying loads or passengers, e.g. in urban networks for public transportation
• CPC Class Codes: G05D 1/0234 using optical markers or beacons optical beacons per se G01S1/70
• CPC Class Codes: G05D 1/0255 using acoustic signals, e.g. ultra-sonic singals sonar systems designed for anti-collision purposes G01S15/93
• CPC Class Codes: G05D 1/0257 using a radar radar systems designed for anti-collision purposes between land vehicles or between land vehicle and fixed obstacles G01S13/931
• CPC Class Codes: G08G 1/075 Ramp control
• CPC Class Codes: Y10S 367/909 Collision avoidance

Abstract

A traffic system, especially a public local passenger traffic system, with self-propelled trackless steerable vehicles travelling on special lanes. Beam reflectors, especially sound reflectors are arranged along the entire length of the lane true to the shape of the road transmitting and receiving apparatus, especially sound echo sounding or radar apparatus, are provided in each vehicle which influence the vehicle steering system to provide an automatic vehicle cross guidance in accordance with the contact-free distance detection of the reflectors.

Claims

1. A traffic system comprising:

a roadway including at least one separate, single lane;

a land vehicle for moving along said lane and having a central longitudinal vertical plane;

steerable wheels on said vehicle;

means for actuating said steerable wheels;

energy reflector means mounted along said lane;

energy-transmitting-and-reflection-receiving means mounted on said vehicle for distance-determining detection of said reflector means;

means for controlling said steerable wheel actuating means in response to said detection;

said reflector means including at least one reflector arranged at each side of said lane at least at bifurcations and mergers of said lane;

said transmitting-receiving means including transmitter-receivers mounted on both sides of said central longitudinal vertical plane of said vehicle; and

switching means on said vehicle for switching said controlling means from being responsive to said detection of said transmitter-receiver on one side of said plane to be responsive to said detection of said transmitter-receiver on the other side of the plane.

2. A traffic system according to claim 1, wherein said transmitter-receivers are mounted on the roof of the vehicle on opposite sides of said plane and said reflector means includes reflector members mounted along both sides of said lane above the roof of the vehicle.

3. A traffic system according to claim 1, wherein said transmitter-receivers are mounted on the sides of the vehicle on opposite sides of said plane and said reflector means include reflector members along both sides of said lane for cooperation with said side mounted transmitter-receivers.

4. A traffic system according to claim 1, wherein said switching means includes a switch manually actuable by an operating person.

5. A traffic system according to claim 1, wherein said switching means is responsive to a road influencing means for activating said switching means.

6. A traffic system according to claim 5, further comprising pulse transmitter means arranged at least in front of a road merger as viewed in the driving direction at the edges of both merging lanes, and sensor means responsive to said pulse transmitter means being arranged on the vehicle for actuating said switching means so that at least only that transmitting-receiving means remains effective during the period of time of passage through the merger place which is coordinated to an uninterrupted reflector means continuously existing at the merger place.

7. A traffic system according to claim 5, further comprising pulse transmitter means arranged at the road edge at least ahead of a bifurcation as viewed in the driving direction, sensor means responsive to the pulse transmitter means being arranged on the vehicle for controlling the switching means, said pulse transmitter means being activated by a pre-program signal transmitted by the vehicle and specifying the line course of the vehicle.

8. A traffic system according to claim 1, wherein said transmitting-receiving means transmits and receives sound waves, the frequency of the sound waves emitted by the transmitting means being in the ultrasonic range.

9. A traffic system according to claim 1, wherein said reflector means includes at least one continuous, uninterrupted reflector member extending along said lane.

10. A traffic system according to claim 1, wherein said reflector means includes at least one mechanical guide structure provided at the roadway edge.

11. A traffic system according to claim 1, wherein said reflector means includes at least one overhead reflector member arranged above the vehicle along said lane, and said transmitting-receiving means includes at least one transmitter-receiver arranged on the vehicle in the roof area for providing a roof transverse guidance.

12. A traffic system comprising:

a roadway including at least one separate single lane;

a land vehicle for moving along said single lane;

steerable wheels on said vehicle;

means for actuating said steerable wheels;

energy reflector means mounted along said lane;

energy transmitting-and-reflection-receiving means mounted on said vehicle for distance-determining detection of said reflector means;

means for controlling said steerable wheel actuating means in response to said distance-determining detection;

said reflector means including side reflectors mounted below the roof of said vehicle and overhead reflectors mounted above said roof, said overhead reflectors being mounted at least at crossings between two of said lanes;

said transmitter and receiving means including at least one side transmitter-receiver mounted on the side of said vehicle for determining the distance of said side reflectors from said vehicle and at least one roof transmitter-receiver mounted in the area of the roof of said vehicle for determining the lateral distance of said overhead reflectors from said vehicle; and

switching means mounted on said vehicle for switching said control means from being responsive to said distance-determining detection of said side transmitter-receiver to being responsive to said distance-determining detection of said roof transmitter-receiver.

13. A traffic system according to claim 12, further comprising means mounted along said lanes before said crossings, in the driving direction, for actuating said switching means.

14. A traffic system according to claim 12, wherein said lanes have mutual crossings, said reflector means including at least one reflector at at least one side of each of said lanes and at least one movable reflector at at least one of said crossings for selective displacement between alignment with a reflector member of one of said lanes and alignment with a reflector member of the other of said lanes.

15. A traffic system comprising:

a roadway including separate, single lanes having mutual crossings;

a land vehicle for moving along said lanes;

steerable wheels on said vehicle;

means for actuating said steerable wheels;

energy reflector means mounted along said lanes;

energy-transmitting-and-reflection-receiving means mounted on said vehicle for distance-determining detection of said reflector means; and

means for controlling said steerable wheel actuating means in response to said distance-determining detection;

said reflector means including at least one reflector member at at least one side of each of said lanes and at least one movable reflector at at least one of said crossings for selective displacement between alignment with said reflector member of one of the lanes and alignment with the reflector member of the other of said lanes.

16. A traffic system according to claim 15, wherein said at least one reflector member is a continuous, uninterrupted reflector extending along said lane.

17. A traffic system according to claim 15, wherein said at least one reflector member is a row of reflectors.

18. A traffic system according to claim 15, wherein said movable reflector is movable in at least one of a horizontal and vertical plane for alignment with the reflector member at the side of said lanes.