Maqueta Semáforo Universidad Politécnica De Zacatecas
Inglés IX Ingeniería En Sistemas Automotrices
Teacher: Adriana Ivette Cervantes López
Members: Cecilia Alonso Silva - 1200181
Eugenio Blanco Gutiérrez - 1200163
Fermín Rivas López - 1200404
Iván Said Herrera Hernández - 1200372
Date: July 21, 2023
Objectives:
To make a mock-up.
Pass unit 3 of the English subject.
Traffic light:
150 years ago, in December 1868, the world's first traffic light was installed in
London outside the British Parliament in Westminster.
Using railroad signals as a reference, railway engineer John Peake Knight
designed the first traffic light used to control traffic. His design consisted of two
vertical arms with two gas lamps. During the day, when the arm was in the
vertical position it indicated "go" and when it was in the horizontal position it
indicated "stop" and at night the gas lamps were used with the colors green for
"go" and red for "stop", manually operated by a policeman. A few months after its
installation, an accidental explosion seriously injured the policeman in charge of
its operation and the traffic light was removed.
The increased need for traffic control due to the increased use of various types
of vehicles and the resulting traffic congestion led to the idea of the traffic light
being revived in the early 20th century. The evolution in the installation of the first
electric street lights made it possible to adapt J.P. Knight's invention to a safer,
