The line was put into service on 1 April 1906, well before the official opening date of 28 April. This short route, opened solely for passenger traffic, traced a rectangle between the Trianon roundabout and the racecourse, the narrow gauge rails being established beside the Rue d’Elbeuf between the trees lining the road and the fences separating adjacent land (much of which was owned by Hulin). Service was provided by two diesel-electric locomotives, built by the Turgan workshops, each with room for 16 people,This statement is contradicted in some published articles, by and by . The relevant information in the departmental archives relating to M. Lechalas, chief engineer, and more so those contained in the Soulier Report given to the Conseil général of Seine-Inférieure on 6 May 1908, imply that diesel-electric locomotives were definitely used before steam locomotives, see and . and the fuel depot was sited near to the racecourse. The service was particularly frequent: thirty journeys each way per day. The entire line took 10 minutes to traverse at a maximum speed of .
