The Director-General, SON, Mr Osita Aboloma, was represented by Mr Dauda Yakubu, regional coordinator, North West, at the training.
News Agency of Nigeria (NAN) reports the two-day event holding in Sokoto, drew particpants from the 19 northern states.
They included personnel of the organisation, vehicle inspection officers, security agencies, transport unions and other related stakeholders.
Speaking at the ceremony, its director-general said the training was to acquaint the participants with the minimum requurements for insoection and testing procedures.
“ These include causes of rejection of motor vehicle, trailer and semi trailer in relations to their safe operations on the road.
“ It also requires the regulatory authorities with mandate to conduct and administer a system of periodic road vehicle inspection and testing to do so in compliance with standard.