PIE base ‘to go, move, convey, especially by wheeled vehicle’. See also kʷel-, root of wheel.
Other derivatives include wagon, vehicle, envoy, deviate, devious, trivial, always, away, convex, via, vector, and weigh.
This root explains how Proto-Indo-European languages spread so widely. As David W. Anthony explains in The Horse, the Wheel, and Language, the original speakers of Proto-Indo-European used the ox wagon, horseback riding, and the warrior’s chariot to turn the Eurasian steppes into a thriving transcontinental corridor of communication, commerce, and cultural exchange. See also *yeug-, PIE root of ‘yoke’ and ‘unify’.
[Pokorny u̯eĝh-, ‘to move, carry, drive’, pp. 1118–1120.]