No, every city would license the $BigCorp logos for Stop and Yield and let $BigCorp police the streets. The logos would be updated frequently and drivers would need to have mandatory new training. Some cities would have a cheaper license in exchange for requiring citizens to share their movement data with $BigCorp.
To get from A to B, drivers would have to pass through $BigMac and wait 1 minute with the option to buy a 'meal' and continue on quicker.
Bluntly speaking, as a taxpayer of country A I don’t care if country B benefits. It’s okay if they do but as a taxpayer of country A I wouldn’t like my money to be spent on solving country’s B issues.
Some truth to that on a national level, but what about the communal level? Wouldn't your whole nation be a better place if its counties didn't have to spend money for solving the same problems over and over again (and put the money into other infrastructure instead)?
If we would do traffic like we do IT today every city would have their own graphic designer coming up with Stop and Yield signs.