Is it safe to drive a car with an emission leak

If you are saying you have a diagnostic trouble code that indicates you have a large evaporative emissions system leak - then - yes, for the most part you can drive the car for a short period of time until you can get it checked. However, I would not leave it long. Initially, it is safe to drive if that's the only noted concern. If the vehicle is otherwise not running properly, it would be smart to get it checked sooner than later anyway. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops