To meet the different needs of passengers in summer, Tianjin Metro has started the "different temperatures in the same car" air conditioning mode on Line 9 on June 15, "cool in the middle and comfortable at both ends", with cars 2 and 3 as strong cooling areas and cars 1 and 4 as weak cooling areas.
Metro Lines 5, 6, and 10 will also start the "different temperatures in the same car" air conditioning mode in the near future, with cars 3 and 4 (i.e. the two middle cars) as strong cooling areas and cars 1, 2, 5, and 6 (other cars) as weak cooling areas.
