This GRPE session, including the IWG meetings, is scheduled to be held in Geneva, Palais des Nations, starting on Monday, 7 January 2019, from 9.30 a.m. until Friday, 11 January 2019, at 5.30 p.m. Interpretation services would be provided from 8 January (2.30 p.m.) to 11 January (12.30 p.m.) 2019. The deadline for the submission of official working documents to this session is 16 October 2018.
The following meetings have been scheduled in conjunction with this session:
| Date | Event | Times |
| Monday, 7 January 2019 | Worldwide harmonized Light vehicles Test Procedure (WLTP) | 9.30 a.m. – 12.30 p.m. 2.30 p.m. – 5.30 p.m. |
| Heavy Duty Fuel Economy measurement Workshop | 9.30 a.m. – 12.30 p.m. 2.30 p.m. – 5.30 p.m. | |
| Tuesday, 8 January 2019 | Worldwide harmonized Light vehicles Test Procedure (WLTP) | 9.30 a.m. – 12.30 p.m. |
| Electric Vehicles and the Environment (EVE) | 2.30 p.m. – 5.30 p.m. | |
| Environmental and Propulsion Performance Requirements of L-category vehicles – OBD2 (OBD2 CG) | 2.30 p.m. – 5.30 p.m. | |
| Particle Measurement Programme (PMP) | 2.30 p.m. – 5.30 p.m. | |
| Wednesday, 9 January 2019 | Environmental and Propulsion Performance Requirements of L-category vehicles (EPPR) | 9.30 a.m. – 12.30 p.m. 2.30 p.m. – 5.30 p.m. |
| Global Real Driving Emissions (RDE) | 9.30 a.m. – 12.30 p.m. 2.30 p.m. – 5.30 p.m. | |
| Vehicle Interior Air Quality (VIAQ) | 2.30 p.m. – 5.30 p.m. |
GRPE may wish to consider a proposal prepared by the expert from the International Organization of Motor Vehicle Manufacturers (OICA) to clarify the relationship between approval levels, reference fuels and PN limits for PI vehicles and to modify the calculation formulae for determination of evaporative emissions in accordance with changes already agreed in UN GTR No. 19.