Where is the ‘safest in the world’ SR 99 tunnel being built?


What US city is building a new road tunnel, called the SR 99, specially designed to be one of the safest in the world?

Share this story:

About Author


Rachelle joined Traffic Technology International in early 2016 after having worked for an HR magazine and prior to that, as a freelance sub editor for various lifestyle consumer magazines. As deputy editor, she supports the editor in making each issue and updating the website. Outside of work, she enjoys tap dancing, playing the piano and video games, and eating spicy food.