Reports, Case Studies & Assessments On-road testing with Portable Emissions Measurement Systems (PEMS) — Guidance note for LDV - Cloned Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download 201709_PEMS_Guidance_LDV_2017.pdf en Added on: 05 March, 2026 Breadcrumb Home Resource Library On-road Testing With Portable Emissions Measurement Systems (PEMS) — Guidance Note For LDV - Cloned This European Commission guidance note describes best practices for preparing, conducting, and following up on on-road emissions tests using Portable Emissions Measurement Systems (PEMS) for light-duty vehicles.It supports capacity building for real-driving emissions (RDE) style testing by detailing recommended procedures, instrumentation considerations, and data recording parameters.