Yes, TRACTIONS is a Scrabble word!

Letter values in Scrabble US: T 1, R 1, A 1, C 3, T 1, I 1, O 1, N 1, S 1.

Is it a valid word?

TRACTIONS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

the friction between a body and the surface on which it moves (as between an automobile tire and the road)
(orthopedics) the act of pulling on a bone or limb (as in a fracture) to relieve pressure or align parts in a special way during healing

Also: adhesive friction.