I know that MA law on a yellow light just says "Same as the MUTCD", and the MUTCD rule about yellow lights is that they simply tell you that the green phase has ended, and the red phase will soon start. There is no obligation to stop (or do anything else) when the light is yellow.

Here's a good example: I live in an unincorporated area just inland from Myrtle Beach, SC. This area has a Myrtle Beach, SC mailing address, but isn't in the city limits. The city of MB recently enacted a new 'tourism tax' that tacks an additional 1% to the normal sales tax in the area. The problem is that businesses (including both local stores as well as out of state mail order companies, etc) are charging the extra 1% to anything with a MB address.

Aside from 1 small housing development, my entire zip code is entirely outside of the MB city limits, yet we are randomly getting charged the wrong sales tax (which we don't even benefit from, since we're not actually part of that city).