When drawing a road perspective, you need to take into account the vanishing point. This is the point on the horizon where all of the parallel lines in your drawing will converge. To find the vanishing point, you need to extend two lines from each end of the road until they meet at a single point on the horizon.
Once you have found the vanishing point, you can start drawing your road. Start by drawing a line from one side of the paper to the vanishing point. Then, draw a line perpendicular to this first line at any point along its length. This will be your second vanishing point. From here, continue drawing your road towards this second vanishing point.
As you get closer to the second vanishing point, keep in mind that the lines in your drawing will become increasingly convergent. This means that they will appear to get closer together as they approach the second vanishing point. Keep this in mind when drawing details such as trees or buildings alongside the road; if they are too close together, they may appear distorted.
With these guidelines in mind, experiment with different compositions and see how changing the position of your vanishing points can affect the overall look of your drawing!