traffic block
21block party — noun : a public party held in the open air (as in a stretch of street temporarily barred to traffic) commonly under the auspices of a public figure or organization compare block dance * * * noun, pl ⋯ ties [count] US : a party that is held… …
22block — A square or rectangular, sometimes an irregular, portion of a city or village which is enclosed by streets. Anno: 6 ALR 1167; the portion of a street, including both sides, measured from one intersecting street to the next intersecting street.… …
23block dance — noun : a public dance commonly featuring folk and other specialty dancing that is held outdoors (as in a street temporarily closed to traffic) compare block party …
24Automatic Block Signal — Basic Automatic Block Signals = Automatic Block Signal, or ABS, systems consist of a series of signals that govern blocks of track between the signals. The signals are automatically activated by the conditions of the block beyond the signal.… …
25Centralized traffic control — (CTC) is a signalling system used by railroads. The system consists of a centralized train dispatcher s office that controls railroad switches in the CTC territory and the signals that railroad engineers must obey in order to keep the traffic… …
26Direct traffic control — (DTC) is a system for authorizing track occupancy used on some railroads instead of or in addition to signals. It is known as direct traffic control because the train dispatcher gives track authority directly to the train crew via radio, as… …
27City block — For other uses, see City block (disambiguation). Diagram of an example of a rectangular city block as seen from above, surrounded by streets. The block is divided into lots which were numbered by the developer as shown in red here and as shown in …
28Signalling block system — Signalling block systems enable the safe and efficient operation of railways, so as to avoid collisions between trains. Block systems are used to control trains between stations and yards, and not normally within them. Any block system is defined …
29Right- and left-hand traffic —   countries with right hand traffic …
30Air traffic controller — For the video game series, see Air Traffic Controller (video game). Air Traffic Controller Military air traffic controllers in a control tower Occupation Activity sectors Aviation …
