Regulators have stressed all insurance companies must give motorists discounts of 5-10% on auto insurance premiums for all vehicles equipped with closed-circuit TV systems (CCTVs) or be fined.
The move followed consumer complaints that some companies had refused to do so.
Suthiphon Thaveechaiyagarn, secretary-general of the Office of Insurance Commission (OIC), confirmed on Saturday vehicles with dashboard cameras also qualified for the privilege, not just those with CCTV systems, so long as they could record video clips.
"However, other devices modified to work as dashcams are not," he said.
He was probably referring to mobile phone apps that turn a mobile phone into a dashcam.
Mr Suthiphon added motorists did not need to register the installation of such cameras with the Land Transport Department as claimed by some insurers.
Any insurer failing to comply with the order will face a fine up to 300,000 baht, he said, adding motorists could report them through the OIC's 1186 call centre.
The OIC, by Mr Suthiphon, signed the order requiring auto insurance companies give the insured the discounts on March 10 this year.