At least once a year, you should make a visual inspection of your asphalt driveway and any other asphalt surfaces on your property.
Take note of any brittle or cracking edges at the corners or loose gravel.
As a temporary fix, you can fill small cracks with an asphalt emulsified caulk found at your local hardware store. This will help prevent them from growing into larger cracks that may create expensive problems later on.
If, however, you find more significant cracking or brittle edges, you should seek the recommendation of an asphalt specialist for proper treatment.
Consider sealcoating your driveway and other asphalt surfaces every two to three years.