Excerpt from Chapter 15 – Basic Autocross Techniques

Finding the Fast Line

Walking the course ahead of time can make a big difference. Since most autocross events only allow the drivers two or at most three runs, there really isn’t enough time to develop a strategy for the course and figure out the best line while driving it. Instead, serious competitors will arrive early enough so they can walk the course and scope it out.

When you do walk the course, try to ignore the rest of the crowd. Don’t just walk around to see where it goes; instead look at each corner, or sequence of corners and pause long enough to figure out how to go through that portion most quickly.

As you walk the course, divide it into cornering sequences and straightaways. You want to be in a position to get on the throttle quickly going into a straightaway, so that may sometimes mean planning your line through several corners in such a way that you can come out of the last corner at the right point and pointed in the right direction to burn up the straight.

The best strategy to deal with a sequence of turns leading up to a straight is to work backwards. Start with the straight, looking at where the car will be straightened out and pointed in the proper direction, then figure out how to take the previous corner so that the car winds up at the right point, facing in the right direction. Then evaluate the next previous corner and so on until you’ve figured out where you need to enter the sequence and how you should take it.

Autocross courses are typically made up of standard right and left turns, plus some ingenious obstacles that will be incorporated into every course. These include slaloms, chicanes, 360-degree turns, and sweeping turns. For each of these, we can offer some tips to take them as fast as possible

Slalom Segments

Slaloms are an important part of every autocross course. This segment of the course will consist of a straight line of cones, typically placed at equal distances from one another. The task is to go from right to left to right again, weaving through the line while maintaining as high a speed as possible.

To run a slalom sequence quickly, you definitely need to be looking two to three cones ahead, rather than simply concentrating on turning around the next cone. Drivers who focus on the cones one at a time typically start fast, then find themselves going wider and wider with each turn until they finally reach a point where they have gone too wide and can’t get turned without going off course or hitting a cone.

Instead, you should choose your turning point outside the line of cones, so that you just brush past each cone on the way to the point where you turn to line up to pass the next cone. If anything, you should start the sequence more slowly than you think will be necessary. That way you can gradually gain speed as you go through, rather than having to slide around and scrub off speed in order to stay on course.

A typical slalom segment is shown here, illustrating the principle that you turn outside the line of cones, and cross the line next to the cone, coming as close as possible to it. The tricks to quick times here are to look way ahead, and enter the slalom slow, then gradually speed up if possible.