Will you please tell me the complete procedure to become Regional transport officer????

The recruitment examination of the Regional transport officer is being conducted by the State Public Service Commission. There are following different three posts under RTO, which are as following:

Clerk
Judicial
Sub Assistant

The eligibility conditions are as following:

Clerk Eligibility
The applicant should have completed graduation, with good academic record.

Age limit:
Age limit between 18 to 37 years

Sub Assistant Eligibility:
The applicant should have completed graduation, with good academic record.

Age limit:
18 to 34 years

RTO Engineering Eligibility:
The applicant should have completed Bachelor Degree in Engineering (Civil / Mechanical / Electrical )

The selection will be based on followings:

Preliminary examination
Mains examination
Personal interview