quadrant signal

См. также в других словарях:

• Quadrant roadway intersection — A quadrant roadway intersection includes an extra roadway between two legs of the intersection. This roadway adds two three way intersections in addition to the original four way intersection.The advantage is that all left turns1 are removed from …   Wikipedia

• Signal Hill, Calgary — Infobox Settlement official name = Signal Hill other name = settlement type = Neighbourhood imagesize = image caption = Signal Hill and Canadian Rockies city logo = citylogo size = mapsize = map caption = image dot dot mapsize = 250px dot map… …   Wikipedia

• Railway semaphore signal — One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted arm . Semaphore signals were patented in the early 1840s by… …   Wikipedia

• Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… …   Wikipedia

• Four-quadrant gate — A four quadrant gate is a type of boom barrier gate protecting a grade crossing.It has a gate mechanism on both sides of the tracks for both directions of automotive traffic. The exit gates blocking the road leading away from the tracks in this… …   Wikipedia

• 335th Theater Signal Command (United States) — Infobox Military Unit unit name=335th Signal Command (Theater) caption=335th Theater Signal Command Shoulder Insignia. countryUSA allegiance= Federal type=Theater Command branch=Army Reserve dates=Activated February, 1953 as the 335th Signal… …   Wikipedia

• Wigwag (railroad) — This article is about the wigwag railroad crossing signal. For other uses, see Wigwag (disambiguation). A Magnetic Flagman wigwag signal in use in southern Oregon in 2007. Wigwag is the nickname given to a type of railroad grade crossing signal… …   Wikipedia

• UK railway signalling — The railway signalling systems used across the majority of the United Kingdom rail network use lineside signals to advise the driver of the status of the section of track ahead. Most lineside signals are in colour light form, but a significant… …   Wikipedia

• Australian railway signalling — Just as the railways of Australia has suffered issues from incompatible rail gauges, the different states have tended to go their own way regarding railway signalling practice.New South WalesThe signalling system in New South Wales consists… …   Wikipedia

• Monopulse radar — is an adaptation of conical scanning radar which sends additional information in the radar signal in order to avoid problems caused by rapid changes in signal strength. The system also makes jamming more difficult. Most radars designed since the… …   Wikipedia

• Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …   Wikipedia