EP 0654774 A1 19950524 - Traffic control system.
Title (en)
Traffic control system.
Title (de)
Verkehrsüberwachungssystem.
Title (fr)
Système de surveillance du trafic.
Publication
Application
Priority
NL 9301993 A 19931118
Abstract (en)
A traffic control system comprising video cameras, being positioned above or along a traffic roadway for monitoring a predetermined road or lane segment, is provided with means for continuously recording road images and with selection means for selectively recording images when a vehicle is within sight. The road segment to be monitored is provided with a cross strip, contrasting clearly with the road surface within the viewing sight of the camera(s), and the video cameras are connected to a processor capable of distinguishing this cross strip even when a shadow or light from the headlights of a vehicle is incident on it. A blocking function blocks the selection means when the cross strip is distinguishable, and releases them only when the cross strip, for at least across a section of its length, is indistinguishable. In this manner it is ensured the only images recorded are of an actual vehicle. <IMAGE>
IPC 1-7
IPC 8 full level
G08G 1/017 (2006.01); G08G 1/04 (2006.01)
CPC (source: EP)
G08G 1/0175 (2013.01); G08G 1/04 (2013.01)
Citation (search report)
- [A] FR 2645310 A1 19901005 - ELSYDEL [FR]
- [A] GB 2266398 A 19931027 - TRAFFIC TECHNOLOGY LIMITED [GB]
- [A] US 4433325 A 19840221 - TANAKA RYOHEI [JP], et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 94202970 A 19941014; NL 9301993 A 19931118