Nomad Car Hydrogène (NCH2) - Interviews with the players

Normandie Hydrogen Project (CERTAM & Transdev) [00:00:00] Visual introduction showing the coach in operation along with the project logo. [00:00:14] David Preterre introduces CERTAM, a technological research center affiliated with the CNRS. [00:00:23] He explains that their mission for the past 20 years has been to reduce pollutant emissions, primarily for the automotive industry. [00:00:32] Presentation of the partnership with Transdev. The goal is to precisely measure the pollution emitted by a diesel coach before converting it into a hydrogen‑powered vehicle (retrofit). [00:01:21] The experiment focuses on a real bus line connecting Rouen to Évreux. [00:01:42] Technical description of the vehicle: an 11‑year‑old Euro 5 standard coach that would normally have been withdrawn from service. [00:01:57] Explanation of the retrofit concept: instead of scrapping the vehicle, its combustion engine is replaced with a clean propulsion system to extend its life in an ecological way. [00:02:07] Focus on the measurement tool, the PEMS Lab. It is a mobile laboratory installed at the back of the bus that analyzes exhaust gases in real time while the bus is operating with passengers on board. [00:02:18] List of pollutants analyzed: CO₂ (carbon dioxide), carbon monoxide, nitrogen oxides, and fine particulate matter. [00:02:29] The laboratory also measures non‑regulated gases such as ammonia and nitrous oxide for a complete scientific assessment. [00:02:56] Tests were carried out during summer 2021 to establish a solid baseline reference. [00:03:39] Major finding: switching to hydrogen on this line could save between 1,500 and 2,000 tonnes of CO₂ per year. [00:04:13] Conclusion regarding public health impact. Transitioning to hydrogen eliminates harmful pollutants that affect lung health. [00:04:22] The hydrogen engine (fuel cell) emits only water vapor.