Last month we covered the green flag and what it means in racing. This month, we come to quite possibly the most commonly thrown flag during a race: the yellow or caution flag. Clearly obvious in their meaning, yellow flags signify some type of incident on track and as such suggest that speeds be reduced, but the reduction is somewhat ambiguous and changes dramatically as you move up the racing ladder. Finally, yellow flags often present some of the most strategic situations in the sport and can be played to great advantage, or they can cost a team an apparently well-earned victory.
Again, as with our previous discussion, in the interests of simplicity we will focus on the flags as they pertain to road racing. There are basically two types of yellow flags that can be thrown: 1) corner or local yellows, and 2) full course yellows. The basic rules are similar for the two scenarios that include suspension of any passing, slowing the pace and increasing the level of awareness for emergency vehicles or corner workers in the area in question. There are, however, some notable differences between the two flags.
During a corner or local yellow, the majority of the track is typically still at race velocity with a corner or short series of corners under yellow. This can be due to a spun or crashed car that appears to be able to continue on its own and will soon clear the area. Or it may be due to a crashed car that is off circuit enough to not be considered a danger and doesn't need to be moved.
With on-track incidents, ideally there is a path that can be taken to avoid a spun car, although it may briefly be on the racing line and special care should be taken. On proper road courses where it's usually easy to look into corners, a spun car on the racing line is easier to pick out and prepare for. However, a local yellow thrown at a street circuit, with its vision-impeding walls, can present a unique challenge because drivers often don't know what lies beyond the turn-in point of the corner.
A single yellow flag in the hand of a corner worker often means that the yellow is restricted to a local caution. A wise driver can often glean much-needed information from the way with which the corner worker is waving the flag. A standing yellow or slightly waved flag, typically indicates a car spun or car pieces off the racing line with a clear path through. Exuberantly waved yellows can mean something else entirely, however, with the potential of a car parked on the racing line or corner workers potentially out helping a car get going. Either way, extreme caution should be exercised in that area when a waving yellow is displayed.
There should be a dedicated thought process in the driver's mind during these scenarios with regard to safety. After all, if cars have spun in a particular area, there must be a reason as to why. If someone had blown a motor and dumped the circuit with fluid you could well find yourself facing where you came from just as quickly as the driver that brought out the initial yellow! But overdoing it by parking the car in a yellow situation can be just as dangerous a problem as carrying a little too much speed. Ultimately, the driver must learn to drive to the situation, and in this respect drivers with more on-track experience often have an advantage.
Once drivers are clear of the area of a local yellow, they can then work back up to race pace. Of course, everyone is trying to get up to speed the quickest and take advantage of those who play the yellow flag area too conservatively. Just keep in mind that sanctioning bodies do not take it lightly when a driver is too aggressive in yellow flag areas, and the pass that you may have made exiting the yellow area could well be reversed by the course marshal. Also remember that the next lap around you should be especially aware in that part of the circuit as it may still be yellow, or the trouble may have been cleared.