In Texas, evading arrest comes in two forms. Misdemeanor evading and felony evading.
Misdemeanor evading is on foot, if some officer is trying to stop someone and they keep running, they can be arrested for evading arrest on foot.
If the person is in a motor vehicle, the officer is trying to pull them over and the person is disregarding the officer trying to initiate a traffic stop, that person can be charged with felony evading arrest.