power interlocking
121Continuous Automatic Warning System — For the gun, see Heckler Koch HK CAWS. For the wrestling video game creation mode, see Create a wrestler. The Continuous Automatic Warning System (CAWS) is a form of cab signalling and train protection system used in Ireland to help train drivers …
122Positive train control — (PTC) is a system of monitoring and controlling train movements to provide increased safety.OverviewThe main concept in PTC is that the train receives information about its location and where it is allowed to safely travel. Equipment on board the …
123Railway 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… …
124Viet Cong and PAVN battle tactics — Soldier of a NLF/Viet Cong Main Force Unit. They shared common arms, procedures, tactics, organization and personnel with PAVN. Viet Cong and PAVN battle tactics comprised a flexible mix of guerrilla and conventional warfare battle tactics used… …
125Butterfly (montagnes russes) — Éléments de montagnes russes Traduit de l anglais en:Roller coaster elements Les montagnes russes se composent de nombreux éléments. Ces éléments peuvent être purement techniques (frein, harnais...) ou avoir comme but d offrir des sensations aux… …
126Diving loop — Éléments de montagnes russes Traduit de l anglais en:Roller coaster elements Les montagnes russes se composent de nombreux éléments. Ces éléments peuvent être purement techniques (frein, harnais...) ou avoir comme but d offrir des sensations aux… …
127Immelmann (inversion) — Éléments de montagnes russes Traduit de l anglais en:Roller coaster elements Les montagnes russes se composent de nombreux éléments. Ces éléments peuvent être purement techniques (frein, harnais...) ou avoir comme but d offrir des sensations aux… …
128Moteur linéaire synchrone — Éléments de montagnes russes Traduit de l anglais en:Roller coaster elements Les montagnes russes se composent de nombreux éléments. Ces éléments peuvent être purement techniques (frein, harnais...) ou avoir comme but d offrir des sensations aux… …
