sentences:  The Biel works uses an additional 45 modernised Tm IV shunting tractors.After the refit, the shunting tractors will be classified as type Tm 232.In summer 2010, SBB Cargo ordered 30 new two-axle hybrid locomotives (type Eem 923 Hybrid) from Stadler Winterthur AG to replace the Bm 4/4 shunting locomotives and various three-axle shunting locomotives used for light freight duties for wagonload traffic, since the old locomotives no longer met current requirements in terms of age, cost-effectiveness and performance.