Most of the time you can drive on your driveway 24-48 hours after the coat is finished.
There are a few issues to note that affect dry time:
1. Shaded areas will take longer than areas in direct sunlight.
2. Cooler temperatures below 80° F and higher humidity above 50% can add afew hours to the cure time.
3. Driveways with many cracks take longer; the more cracks and the deeper the cracks, the longer it takes to cure.