hi mahesh.. With a valid Indian driving license you can drive in Louisville, but I am not sure till when. Its advisable to get Kentucky's DL. First of all you will have to complete a written test.(preparation material can be found at www.kentcukystatepolice.org). after you have cleared the test you will have to schedule an appointment for driving road test within 30 days. the process is different if you dont have an Indian License.