The IWG on PTI Provisions for PTI works on whole-life compliance, testing ADAS/ADS at Periodic Technical Inspection, ePTI provisions, driverless vehicle inspection, and anti-tampering measures across 2025–2027. Provisions for PTI exist in at least 20 UN Regulations as of 8 April 2026, though PTI experts deem some insufficient and additional provisions may be needed. The proposed update procedure requires the IWG to generate a current provisions list, present needs to WP.29, develop proposals for the first 2–3 UN Regulations, defend each proposal in relevant GRs, and transmit outcomes to WP.29 for decision.

Proposal to update the PTI informal group mandate.

Proposal for a task force to identify regulatory aspects that can be improved to make tampering more difficult and easier to detect, along with the identification and definition of the most effective methods to detect tampering.

Expectations of the informal working group on Periodical Technical Inspections.

Swiss report on circumvention of pollution-control systems through the use of aftermarket AdBlue emulators that stop AdBlue injection while preventing detection of the failure by the engine management system.