Escape-normalized terminal velocity vs. effective temperature. The dashed black lines are the relation presented by Kudritzki & Puls (2000) compiling previous data. The dot-dashed line is the relation presented by Krtička et al. (2021). The red and blue thick solid lines are the average value of our determinations and their respective shaded regions are the standard deviation. The thin dashed fuchsia lines are the Kudritzki & Puls (2000) relation scaled by (Z/Z_⊙)^0.1 metallicity dependence from Leitherer et al. (1992) and the thin dashed green line below it is the metallicity scaling found by Hawcroft et al. (2024). The brown horizontal lines indicate the velocity scaling proposed by Vink & Sander (2021).