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This process is handled by what is essentially a central radio traffic controller, a function automatically handled by a computer system. Trunking is a more automated and complex radio system, but provides the benefits of less user intervention to operate the radio and greater spectral efficiency with large numbers of users.
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]
Traffic cones, also called pylons, witches' hats, [1] [2] road cones, highway cones, safety cones, caution cones, channelizing devices, [3] construction cones, roadworks cones, or just cones, are usually cone-shaped markers that are placed on roads or footpaths to temporarily redirect traffic in a safe manner.
Therefore, no traffic signals are needed and through traffic on freeways does not normally need to stop at traffic signals. Some countries, such as the United States, allow for limited exceptions: some movable bridges, for instance the Interstate Bridge on Interstate 5 between Oregon and Washington, do require drivers to stop for ship traffic.
Repeater equipment: GMSK Node Adapter - these devices are hardware GMSK modems with firmware to take D-STAR protocol frames over a USB cable and provide the necessary logic and GMSK modulation to control a simplex node or a full duplex repeater. One repeater that is easily adaptable is the Kenwood TKR-820 as documented by K7VE. [27]
Gatso speed camera. Speed limits are enforced on most public roadways by authorities, with the purpose to improve driver compliance with speed limits.Methods used include roadside speed traps set up and operated by the police and automated roadside 'speed camera' systems, which may incorporate the use of an automatic number plate recognition system. [1]
M7A electric multiple units, similar to those forming the No. 659 train. At about 5:30 p.m., 14 minutes after sunset on February 3, 2015, [4] a vehicle traveling south along the Taconic State Parkway north of Valhalla, New York, in central Westchester County north of New York City, struck another vehicle making a turn onto Lakeview Avenue from the northbound parkway.
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