The city of Los Angeles, California, has synchronized all of its nearly 4,500 traffic signals, which are spread out across some 469 square miles (1,215 sq km).
Kota Los Angeles, Kalifornia, telah menghubungkan hampir 4.500 lampu lalu lintasnya yang tersebar di seluas kira - kira 1.215 kilometer persegi sehingga bisa menyala serentak.