Complex sentence: If someone fails either the written or driving test, one must wait one day before retaking the written test, however the current wait time is to take a second driving test is uncertain, ranging between three to six months.
Split into simpler sentences: If someone fails either the written or driving test, one must wait one day before retaking the written test. However the current wait time is to take a second test driving test is uncertain, ranging between three to six months.