I didn't recognize the names of the streets where it said my nearest camera was. It turns out it's on the other coast. Perhaps it would be good to show the distance in parentheses, or filter anything that's more than 5 miles away.
The purpose of this site is to take a picture of yourself using a traffic camera. This requires that you're in front of the traffic camera, which requires that you're physically in traffic, which probably wouldn't have a desktop computer involved.
But, if you want to see it, you can set your user agent to some mobile agent. In Safari, this is done with the menu: Developer -> User Agent -> Safari - iOS xx.x
This is their way around non-convertable interaction. They don't want PCs because PCs won't use the idea properly. They hide it behind the idea of a laptop in traffic which is disingenuous but oh well.
Probably saves them a lot of headache and even costs for the site. I wish they were a bit more honest though.