How does public transportation work in SimCIty?
Solution 1:
This is a known issue with the current version of the game that the developers have acknowledged. In a recent blog, Simcity lead designer Stone Librande acknowledged the following concerning traffic and agents:
"we are seeing the emergence of many cities that test our systems in unique ways."
"We are currently testing a patch internally and hope to have it out to you soon,"
So in other words, don't demolish your city just yet. Wait for the traffic patch and see if the improved logic helps your issue.
EDIT : This patch is now out, labeled patch 1.7