Mass Rapid Transit Authority of Thailand (MRTA), by Safety Occupational Health and Environment Office executed a safety audit for the MRT Purple Line Project: Tao Pun – Rat Burana (Kanchanapisek Road) Section at construction sites of Parliament House Station, Bang Pakaeo Station, and Rat Burana Station for inspecting fence tarp, lighting, warning light, material and equipment fixing, and installation of road diversion and warning signs along the route to ensure that they are neat, stable, in appropriate area, and visible, for public safety. Besides, the sites workers were instructed to adhere strictly to safety standards, in according to MRTA Safety Declaration: Zero Fatal Accident for preventing damage for workers and road users and adhere to D-M-H-T-T measures regulated by Ministry of Public Health.