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  2. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    In some situations, traffic signals can also be found on collector roads in busy settings. The International Municipal Signal Association provides input as to standards concerning traffic signals and control devices. One example is the input the association provided for the Manual on Uniform Traffic Control Devices (MUTCD). [98]

  3. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    A talkative user community may cause busy signals while a disciplined, professional group of SMR users may keep channels idle. Some systems experience seasonal peaks. For example, a trunked system in an agricultural area used by crop harvesting crews may overload and experience busy signals during peaks in harvesting. A system used by a ski ...

  4. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Under Hong Kong Law, Chapter 374G of the Road Traffic (Traffic Control) Regulations: Section 46 Giving way to animals, police vehicles, ambulances, etc., drivers must yield to vehicles which are sounding siren and/or flashing light bars. [40] Red and blue: Hong Kong Police Force; Red only: Fire Services Department fire engines

  5. D-STAR - Wikipedia

    en.wikipedia.org/wiki/D-STAR

    Note that a D-STAR radio is required. The DVAP does not convert an analog FM signal to D-STAR. NW Digital Radio Computer accessory: ThumbDV D-STAR DV USB is a USB device with the AMBE codec built in. Amateurs can use this with a personal computer's audio system to communicate over the D-STAR network. This is an option for using D-STAR if there ...

  6. Kavach (train protection system) - Wikipedia

    en.wikipedia.org/wiki/Kavach_(train_protection...

    Kavach incorporates several key characteristics of the European Train Control System (ETCS) as well as the Indian Anti-Collision Device (ACD); however, it is considerably more cost-effective in comparison to ETCS. [7] Furthermore, unlike ETCS, Kavach is not intended to function as a replacement to traditional Lineside signals. While ETCS ...

  7. Signaling of the New York City Subway - Wikipedia

    en.wikipedia.org/wiki/Signaling_of_the_New_York...

    Interlocking signals are fixed signals within an interlocking, containing two separate green-yellow-red signal heads and often other indications. [9] A home signal is defined as an interlocking signal at the entrance to a route or block to control trains entering that route or block. Most interlockings only have one controlled signal on each track.

  8. Valhalla train crash - Wikipedia

    en.wikipedia.org/wiki/Valhalla_train_crash

    Investigators did, however, find that the circuits gave precedence to the highway signal when its preemption was on, in violation of the federal Manual on Uniform Traffic Control Devices (MUTCD), which mandates that the grade crossing preemption circuit always has priority in situations where a crossing is in close proximity to a traffic light ...

  9. “Added 9 Years To A Short Sentence”: 50 Lawyers Recall The ...

    www.aol.com/70-most-memorable-moments-court...

    A patrol officer pulled over a driver for some traffic violation, I think failure to signal. After a heated roadside exchange where the driver initially refused to turn over her license, she ...

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