A vehicle is parked legally in a metered space. The meter shows 30 minutes remaining. A nearby 'No Parking 7AM–9AM' sign applies to the current time. Which rule governs?

1. The meter overrides the sign if time remains on the meter
2. The posted sign takes precedence over the meter
3. The driver may stay since the meter was legally activated
4. The TEA must honor whichever rule benefits the driver