Road safety audit is in the operational stage important to be conducted properly to ensure the safe operation of a road. There are several factors which might be affecting successful road safety audit, e.g. audit object, road environment, auditing method, auditor characteristics, etc. Those factors spread among either academic literature or audit regulations. This paper is intended to describe the factors in detail and at the end list the draft questionnaire which was used in the pilot survey before the main survey to determine the most important factors conducted later