In the US, I'm accustomed to never parking along a yellow or red curb. yellow meaning a freight loading/unloading zone and red meaning a fire or emergency-access zone.
However, in Mexico I see a plethora of yellow curbs, often in residential neighborhoods, with many people parked along them. This leads me to think that a yellow curb does not mean "no parking zone" in Mexico. However, I recently heard of a friend's car being towed for parking in a "yellow zone."
What does a yellow curb signify in Mexico? Can I park there?