Method for providing traffic volume and vehicle characteristics
CA 2655995 C · Owner: International Road Dynamics Inc. · Inventors: Bergan, Terry; Klashinsky, Rod
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Traffic monitoring and warning methods are provided herein. The method is for providing traffic volume line occupancy, per vehicle speed and vehicle classification of vehicles travelling along a highway. The method of one embodiment of the present invention includes the first step of receiving acoustic signals created and radiated by the vehicles as they travel through a detection zone. The method of one embodiment of the present invention includes the second step of signal processing the acoustic signals. By the combination of these two steps traffic volume, line occupancy, per vehicle speed and classification of vehicles are provided.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 16, 1998 and granted October 20, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.