alt Hacker NewsRoad lanes are like CPU cores. And like CPUs, adding more cores does not linearly scale up traffic capacity.
In the case of CPUs, there's sync and communication overhead; for highways, there's more turbulence and slowdown generated by lane-switching.
Replies
seanmcdirmid • 05/15/2025
That's why we are focusing on adding GPU cores instead, but they can only do the same operation on a lot of data in parallel (much like mass transit).
Adding more lanes encourages more driving. That's why it never reduces traffic