Directional (Unidirectional) Tread Patterns
A directional (also called a unidirectional) tread pattern is designed to roll in only one direction and incorporates lateral grooves on both sides of the tire’s centerline. These point in the same direction resuin v-shaped tread blocks. These grooves enhance hydroplaning resistance at high speeds by pumping water more efficiently through the tread pattern. Directional tires are to be used on one side of the vehicle unless they are dismounted and remounted on their wheels. They are intended to be rotated from the front axle to the rear axle. If different tire sizes are used on the front vs. rear axle, they become location-specific and prohibit tire rotation unless remounted. Read more here.
Some examples of the mentioned tire brands and the directional tread patterns are shown below.