Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

Create a timeline

Public timelines

About & Feedback Acordo Privacidade FAQ

Cabinet Get premium

Donate

1 jan 1918 ano - First three-coloured light signals in New York. Police operated.

Adicionado na linha do tempo:

Traffic signals history

9 dez 2019

0

0

303

Data:

1 jan 1918 ano

Agora

~ 107 years ago

About & Feedback Acordo Privacidade FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL