traffic signal operations. Not all states have ratified the convention. A three-colour signal head should have three non-flashing lights which are red, amber...

segregation in cryptographic systems of signals that contain sensitive or classified plaintext information (red signals) from those that carry encrypted information...

Red Signal is a Bollywood film. It was released in 1941. "Bollywood Hindi Movie". Archived from the original on 2 March 2021. Retrieved 20 August 2023...

is also known as running a red, in the United States as a stop signal overrun (SSO) and in Canada as passing a stop signal. SPAD is defined by Directive...

the red light, or yellow light if the signal is a distant and incapable of displaying a red aspect. If it is lit, the signal is "on", and if the red light...

Turn on red is a principle of law permitting vehicles at a traffic light showing a red signal to turn into the direction of traffic nearer to them (almost...

(such as the inclusion of a red-amber phase) or by the use of special signals (such as flashing amber or public transport signals). In the United States and...

Railway signalling (BE), or railroad signaling (AE), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them...

Other signals complement the fixed signs: Mobile signals (light at night / low visibility, flag day) red, yellow and green; Acoustic signals (detonators...

A red flag could either be a literal red flag used for signaling or, as a metaphor, a sign of some particular problem requiring attention. The term and...

an absolute signal displaying a red or white "A" light is also treated as a permissive signal. Some types of signal display separate permissive and absolute...

steady yellow signal, and thence fail to comprehend that the signal is about to change from steady yellow to red. Flashing yellow signals in other contexts...

for the 1957 film and twice for television. "The Hound of Death" "The Red Signal" "The Fourth Man" "The Gypsy" "The Lamp" "Wireless" "The Witness for the...

The Red Signal (French: Le signal rouge) is a 1949 French drama film directed by Ernst Neubach and starring Erich von Stroheim, Denise Vernac and Frank...

The United States Army Signal Corps (USASC) is a branch of the United States Army that creates and manages communications and information systems for the...

The Wow! signal was a strong narrowband radio signal detected on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States...

plans to merge the RedPhone and TextSecure applications as Signal. This announcement coincided with the initial release of Signal as a RedPhone counterpart...

signal increasing the effectiveness to 100 mph (160 km/h). When installed in conjunction with signal controls such as 'double blocking' (i.e. two red...

inclusion of shunting signals (Sh, Schutzsignale) into the main signal's head. This affected mainly exit signals. These signals show two red lights to disallow...

In science, Brownian noise, also known as Brown noise or red noise, is the type of signal noise produced by Brownian motion, hence its alternative name...

speed of 160 kmph and the system could stop the train 10 m before the red signal without the loco pilot applying brakes. A similar test will soon be carried...

and digital signalling. SCART is also capable of carrying S-Video signals, using the red pins for chroma. A TV can be woken from standby mode and automatically...

Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background...

operate at speeds less than 10 km/h (6.2 mph), wait for one minute at each red signal and ensure that the track is visually clear for at least 150 m (490 ft)...

emergency stop, or on some trains automatically, when the train has passed a red signal or the driver has failed to respond to warnings to check that they are...

States. The basic running signal was the Home signal, an absolute stop signal with a red arm. Route signalling was used to indicate the line to be taken at...

safe route to follow for ships to enter the roadstead. It also has a red signal that indicates a dangerous sector around the plateau of les Fillettes...

ie the passage without permission of a signal or sign meaning stop (red main signal, horisontal dwarf signal, ERTMS arrow sign and more) is considered...

A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting...

reaching the train passing the red signal. Therefore, the absence of a signal is interpreted as the most restrictive signal, making the system fail-safe...