Racing flags
Encyclopedia
Auto racing
Auto racing is a motorsport involving the racing of cars for competition. It is one of the world's most watched televised sports.-The beginning of racing:...
and similar motorsports to indicate track condition and to communicate important messages to drivers. Typically, the starter, sometimes the grand marshal
Grand Marshal
Grand Marshal is a ceremonial, military, or political office of very high rank. The term has its origins with the word "Marshal" with the first usage of the term "Grand Marshal" as a ceremonial title for certain religious orders...
of a race, waves the flags atop a flag stand near the start/finish line. On road courses, track marshal
Track marshal
Motorsport marshals contribute to more enjoyable, more efficient, and safer motor racing. They are responsible for the safety of competitors and are stationed at various points of danger around race tracks to assist them in case of any collisions, accidents or track problems...
s are also stationed at observation posts along the course in order to communicate both local and course-wide conditions to drivers. Alternatively, some racecourses employ lights to supplement the primary flag at the start/finish line.
Summary
While there is no universal system of racing flags across all of motorsports, most series have standardized them, with some flags carrying over between series. For example, the chequered flag is commonly used across all of motorsport to signify the end of a session (practice, qualifying, or race), while the penalty flags differ from series to series. FIAFédération Internationale de l'Automobile
The Fédération Internationale de l'Automobile is a non-profit association established as the Association Internationale des Automobile Clubs Reconnus on 20 June 1904 to represent the interests of motoring organisations and motor car users...
-sanctioned championship flags are the most commonly-used Internationally (outside of North America) as they cover championships such as Formula 1, MotoGP
Grand Prix motorcycle racing
Road Racing World Championship Grand Prix is the premier championship of motorcycle road racing currently divided into three distinct classes: 125cc, Moto2 and MotoGP. The 125cc class uses a two-stroke engine while Moto2 and MotoGP use four-stroke engines. In 2010 the 250cc two-stroke was replaced...
and WTCC
World Touring Car Championship
For the video game, known as World Touring Car Championship in Japan, see TOCA World Touring CarsThe FIA World Touring Car Championship is an international Touring Car championship sanctioned by the FIA.-History:...
, and are adopted by many more Motorsport governing bodies across the world such as, for example, the MSA
Motor Sports Association
The Motor Sports Association , is the official governing body of motorsport in the United Kingdom.-Responsibilities:...
.
| Flag | FIA Fédération Internationale de l'Automobile The Fédération Internationale de l'Automobile is a non-profit association established as the Association Internationale des Automobile Clubs Reconnus on 20 June 1904 to represent the interests of motoring organisations and motor car users... -sanctioned championships | NASCAR NASCAR The National Association for Stock Car Auto Racing is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of the late Bill France Sr... | IndyCar |
|---|---|---|---|
 |
Start, end of hazard, or restart | Start/restart of session | |
 |
Local caution or full-course caution (if displayed with "SC" sign) | Caution | Local caution (single) or full-course caution (twin) |
 |
Debris/oil/slippery course (road courses only) | ||
 |
not used | Pit lane closed | |
 |
Session stopped | ||
 |
Slow vehicle on track | Final lap | Final lap/Slow vehicle on track |
 |
not used except for pickup truck Pickup Truck Racing Pickup Truck Racing is a single make series, and the trucks are governed by the Pickup Truck Racing regulations,. The chassis is made by , who are also responsible for the vehicle used in T Cars, a series for young drivers.... and SCSA oval races: Final lap |
not used | Ambulance on course |
 |
Return to pits (i.e. disqualification) | Penalty of some form | |
 |
Car has a dangerous mechanical problem and must go to its pit | not used | |
 |
Unsportsmanlike conduct | not used | |
 |
not used | No longer scored | |
 |
Faster car approaching | Local caution/slow vehicle on track (road courses only) | Faster car approaching |
 |
not used | Faster car approaching | |
 |
End of session | ||
Status flags
Status flags are used to inform all drivers of the general status of the course during a session. In addition, the green, yellow, and red flags described below may be augmented or replaced by lights at various points around the track.The green flag
The solid green flag is usually displayed by the starter to indicate the start of a session. During a session, it is displayed at the end of a caution period or a temporary delay to indicate that the session is restarting.If the session is not under caution or delayed, it is said to be under green-flag conditions, though the flag is not actually displayed.
A green flag at the entrance to the pits may indicate that the pits are open.
In NASCAR, a green and yellow flag waved at the same time indicates that the race is being started under caution and laps are being counted. This usually occurs when a track is drying after a start delayed by rain.
When shown at a marshalling post, a green flag may indicate the end of a local yellow-flag zone.
IndyCar has incorporated a stylized lowercase 'e' into its green flag to promote the series' use of ethanol as a motor fuel.
Before the use of starting lights in Formula One
Formula One
Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...
and most other FIA sanctioned or associated events, the national flag of the country in which a race is occurring, instead of a green flag, was used to signal its start, and still does on occasion in the event of equipment failure.
The yellow flag
In Formula One racing, a yellow flag displayed at the starter's stand or a marshal station indicates that there is a hazard downstream of the station. The manner of display depends on the location of the hazard:
- A single stationary flag denotes a hazard off the course
- A single waved flag denotes a hazard on the racing surface itself
- Two flags waved simultaneously denotes a hazard that wholly or partly blocks the racing surface. This informs the driver that there may be marshals on the track and to prepare to stop, if necessary.
When shown at a station, drivers are prohibited from passing until either the hazard or the next flag station displaying a green flag (signifying the end of a cautionary section) is passed. This flag is shown at the discretion of the marshals manning the station.
In NASCAR
NASCAR
The National Association for Stock Car Auto Racing is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of the late Bill France Sr...
and IndyCar series, a single yellow flag waved from the starter's stand places the race under caution. At this time a pace car will enter the course and lead the field at a safe predetermined speed. On oval tracks, yellow lights are usually used to supplement the primary flag at the start/finish line. The field is locked into place at the beginning of a caution period and no one is allowed to pass another car without mutual consent (excluding crashed and immobile cars). In some races, though, cars may pass one another on the pit road
Pit stop
In motorsports, a pit stop is where a racing vehicle stops in the pits during a race for refuelling, new tires, repairs, mechanical adjustments, a driver change, or any combination of the above...
during a caution period. When the starter shows a furled yellow flag, it indicates one lap to green.
In the case of snowmobile racing, the yellow flag is displayed at or before the point of the hazard. When a snowmobile racer crosses the yellow flag, the race will continue, however, the skis and track of the snowmobile must remain on the ground.
In snowmobile water cross, (racing on open water) the caution flag simply warns the racers that there is one or more racers have sunk and are in the water, however the race will continue as normal.
Safety concerns and the beneficiary in NASCAR
The point at which the caution period starts is a topic of controversy in oval racing. Traditionally, the cars had been locked into their positions when they cross the start/finish line, but technological advancements have made it possible to lock them in at the instant that the caution is declared. This has effectively put an end to the "race back to the caution," in which drivers sped up during yellow flag periods to beat the leader to the flag. This practice, while giving lapped drivers a better chance to make their lap back, was at times highly dangerous in that it encouraged drivers to engage in pitched battles with major safety hazards on track. Safety workers were not able to respond to accidents until the cars were under control of the pace car, which markedly slowed their response times to potentially injured drivers. To compensate for the elimination of the race back to the caution, NASCARNASCAR
The National Association for Stock Car Auto Racing is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of the late Bill France Sr...
and some other motorsports series, both road racing and short oval, have implemented the beneficiary rule, which allows the highest-placed car that is a full lap or more behind the race leader to complete an extra lap during the caution period in order to make up a lap.
In some series (Indy Racing League, Champ Car, beginning in 2007, Formula One, and beginning in mid-2009, NASCAR) lapped cars between the pace car and the leader will be allowed to move to the rear of the next lap when the signal is given two laps before a restart.
In Formula One, all lapped cars between the leaders are permitted to advance one lap.
The rule, as enforced in the three open-wheel series, is designed to prevent lapped cars from blocking on ensuing restarts, as to prevent unsportsmanlike blocking when a lapped teammate or friend of one driver attempts to help that driver through impeding the progress of an opponent on the restart.
Red and yellow striped flag
The yellow and red striped flag is displayed stationary at local flag stations to indicate that track conditions have changed due to substances on the track which could reduce grip or cause a car to lose control - generally oil, coolant, small pieces of debris or sand. It can also be "rocked" back and forth (but not waved) to indicate a small animal on the racing surface. Many organizations will display this flag for only two laps, after which the changed surface is considered to merely be "part of the track".The red flag
The solid red flag is displayed when conditions are too dangerous to continue the session. Depending on the series, the cars are directed to proceed to pit road, or to stop at a specific spot. Also depending on the series, any repair work in the pits or garage area may not be done under red flag conditions.There are several hazards that might cause a need to delay or prematurely end a session. Many hazards, such as rain, darkness, a blocked course (due to debris, water, or safety vehicles), a car on fire, or a multi-car crash (especially one that results in serious injuries or one that results in damage to walls, fences or the surface itself which require repairs) might prompt series officials to call for the red flag.
Some series use a red flag when a severe accident has occurred or to temporarily stop a race nearing the end of a race. This is usually done when a collision requiring cleanup would otherwise extend the caution period to take longer than the amount of race laps available to finish the race, when a fuel spill occurs on the circuit, or to maximize safety team work. During such a red-flag period, cars are directed to stop in line at a specific point on the track, usually directly opposite to the incident.
The red flag may be used to indicate a pre-determined pause in the race, such as NASCAR's Budweiser Shootout
Budweiser Shootout
Budweiser Shootout at Daytona, generally referred to as the Bud Shootout, is an annual invitation-only NASCAR Sprint Cup Series exhibition event held at Daytona International Speedway in February, the weekend before the Daytona 500. It is the first competitive event of the season and serves as a...
or the NASCAR Sprint All-Star Race
NASCAR Sprint All-Star Race
The NASCAR Sprint All-Star Race, formerly known as The Winston until 2004, then the NEXTEL All-Star Challenge from 2004 until 2007, is a race open to race winners from the previous season as well as the current season, plus the past ten event winners and past decade's Cup Series champions...
. In these cases, the cars are directed to the pit area where cars may be worked on to the extent the race rules allow.
Also, a red flag or board, sometimes with a yellow saltire
Flag terminology
Flag terminology is a jargon used in vexillology, the study of flags, to describe precisely the parts, patterns, and other attributes of flags and their display.-Description of standard flag parts and terms:...
, at the entrance to the pits can indicate that the pits are closed. Such a flag is used in both the IndyCar and NASCAR series. In NASCAR, a red flag with a black flag signals the end of a practice session.
The red and yellow flags displayed together
In the event of a bad start, the yellow and red flags may be displayed together, or a unique diagonally-divided red and yellow flag can be displayed, to indicate a restart. Drivers will go back to their starting positions and line up for another start. This is rarely used where computer scoring is involved, and can create much confusion as the drivers attempt to get back in order.The white flag
In all championships which use the FIA International Sporting Code, as well as road courses in North America, the white flag indicates the presence of an official car or a competitor moving at below normal speed in the section of track covered by the flag station.In the IRL and NASCAR, a white flag displayed from the starter's tower indicates the start of the last lap for all the competitors.
In MotoGP, a white flag is used to warn riders of rain.
In some series, a white flag is shown from all flag stations on the first lap of a practice or qualifying session so competitors will know which stations are manned.
Instruction flags
Instruction flags are usually used to communicate with one driver at a time.The black flag
The solid black flag is used to summon a driver to the pits. It is usually used to punish a driver or team for disobeying the rules, but may also be used when a car is suffering a dangerous mechanical failure, such as a loose hood or dragging bumper, or even calling a driver to the pits when their radio is not working. In Formula One races, the black flag means an immediate disqualification for the driver involved. The car number of the summoned driver is displayed in a designated place near the flag stand or occasionally on the flag itself. Black flags can be waved at all observation posts simultaneously to order all drivers to clear the track after the starter waves the red flag, often in the case of a serious accident.In the case of snowmobile racing, the black flag comes in three stages to disqualification, 1st flag is a warning to a racer, 2nd flag is the loss of 1 lap, and the 3rd is total disqualification. In order for a snowmobile racer to receive a black flag, the racer must make contact with intent to inconvenience another racer.
Black flag with orange circle
A black flag with an orange disk in its center indicates that a car is being summoned to the pits due to mechanical problems that are interfering with the race, such as an oil, water, or fuel leak.Sometimes being referred to as the "Meatball".
The per-bend black/white flag
A diagonally-divided black-and-white flag is displayed with a car number to indicate a penalty for unsportsmanlike conductSportsmanship
Sportsmanship is an aspiration or ethos that a sport or activity will be enjoyed for its own sake, with proper consideration for fairness, ethics, respect, and a sense of fellowship with one's competitors...
. This flag can be displayed if a car tries to intentionally drive another car off the course, or if a driver gets out of his/her car and initiates an altercation with another driver.
Other administrators do not distinguish mechanical problems or unsportsmanlike conduct from rules violations.
The white cross flag
Some leagues use a black flag with a white saltireSaltire
A saltire, or Saint Andrew's Cross, is a heraldic symbol in the form of a diagonal cross or letter ex . Saint Andrew is said to have been martyred on such a cross....
. It is displayed with a car number if a driver ignores the other black flags for an extended period of time, and indicates that that car is no longer being scored. In NASCAR as well as the IRL, once this flag is displayed, the car is not scored again until it answers the black flag by pitting.
The blue flag
A light blue flag, sometimes with a diagonal yellow, orange, or red stripe, informs a driver that a faster car is approaching and that the driver should move aside to allow one or more faster cars to pass. During a race, this would usually only be shown to a driver getting lapped, but during practice or qualifying it could be shown to any driver. In most series, the blue flag is not mandatory - drivers obey it only as a courtesy to their fellow racers. In other series, drivers get severely penalized for not yielding or for interfering with the leaders, including getting sent to the pits for the rest of the race. In Formula OneFormula One
Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...
, if the driver about to be lapped ignores three waved blue flags in a row, he is required to make a drive-through penalty.
The chequered flag
The chequered flag is displayed at the start/finish line to indicate that the current session has been completed. At some circuits, the first flag point will display a repeat chequered flag (usually on the opposite side of the circuit). The flag is commonly associated with the winner of a race, as they are the first driver to 'take' (drive past) the chequered flag.Upon seeing the chequered flag and crossing the finish line, drivers are required to slow to a safe speed, and return to their garage, parc ferme, or the paddock, depending on the applicable regulations of the series.
Design of the chequered flag
There is no standard design for the chequered flag. Although it nearly always consists of alternating black and white squaresSquare (geometry)
In geometry, a square is a regular quadrilateral. This means that it has four equal sides and four equal angles...
or rectangles arranged in a chequerboard
Checkerboard
A checkerboard or chequerboard is a board of chequered pattern on which English draughts is played. It is an 8×8 board and the 64 squares are of alternating dark and light color, often red and black....
pattern
Pattern
A pattern, from the French patron, is a type of theme of recurring events or objects, sometimes referred to as elements of a set of objects.These elements repeat in a predictable manner...
, the number
Number
A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers....
, size
Area
Area is a quantity that expresses the extent of a two-dimensional surface or shape in the plane. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat...
, and length-width
Length
In geometric measurements, length most commonly refers to the longest dimension of an object.In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire...
proportion
Proportionality (mathematics)
In mathematics, two variable quantities are proportional if one of them is always the product of the other and a constant quantity, called the coefficient of proportionality or proportionality constant. In other words, are proportional if the ratio \tfrac yx is constant. We also say that one...
s of the rectangles vary from one flag to another. Also, the chequered flag typically has a black rectangle at the corner of the flag closest to the top of the flagpole. There have been instances of the black and white squares being painted onto a wooden board and simply held up for drivers to observe at the finish line. In NASCAR
NASCAR
The National Association for Stock Car Auto Racing is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of the late Bill France Sr...
, the chequered flag has also had the fuel sponsor’s logo (Sunoco
Sunoco
Sunoco Inc. is an American petroleum and petrochemical manufacturer headquartered in Philadelphia, Pennsylvania, United States, formerly known as Sun Company Inc. and Sun Oil Co. ....
, since 2004, and Union 76
Union 76
76 is a chain of gas stations located within the United States. The 76 brand is owned by ConocoPhillips. Union Oil Company of California, dba Unocal, the original owner and creator of the Union 76 brand merged with Chevron Corporation in 2005.In 1997, Unocal sold its western United States refining...
before) emblazoned in the center of the flag. In NASCAR
NASCAR
The National Association for Stock Car Auto Racing is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of the late Bill France Sr...
and F1 events, a single chequered flag is waved to signal the completion of a race. In IndyCar, two chequered flags are waved together.
NASCAR
NASCAR
The National Association for Stock Car Auto Racing is a family-owned and -operated business venture that sanctions and governs multiple auto racing sports events. It was founded by Bill France Sr. in 1947–48. As of 2009, the CEO for the company is Brian France, grandson of the late Bill France Sr...
traditionally has a special version of the chequered flag sewn for Victory Lane that has the name and date of the race on it. That flag is used for the team in winner's photographs taken after the race, and is a prize awarded to the team along with the race trophy. Teams often hang such flags at race team's headquarters in a similar fashion to other sports hanging championship banners from the rafters at stadiums.
Origins of the chequered flag
The exact origins of the use of a chequered flag to end races are lost in history, although there are many theories. A possible though unlikely theory is that horse races during the early days of the settlement of the American MidwestMidwestern United States
The Midwestern United States is one of the four U.S. geographic regions defined by the United States Census Bureau, providing an official definition of the American Midwest....
were followed by large public meals and that to signal that the meals were ready and racing should come to an end, a chequered tablecloth was waved.
Another origin theory claim is that the chequered flag's earliest known use was for 19th century bicycle races in France.
A more likely explanation is that a high-contrast flag would be more conspicuous against the background of a crowd, especially when early races were run on dirt tracks
Dirt track racing
Dirt track racing is a type of auto racing performed on oval tracks. It began in the United States before World War I and became widespread during the 1920s and 30s. Two different types of racecars predominated—open wheel racers in the Northeast and West and stock cars in the South...
(and therefore dust reduced the driver's visibility
Visibility
In meteorology, visibility is a measure of the distance at which an object or light can be clearly discerned. It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country. Visibility affects all forms of traffic: roads, sailing...
).
The earliest known photographic record of a chequered flag being used to end a race was from the 1906 Vanderbilt Cup
Vanderbilt Cup
The Vanderbilt Cup was the first major trophy in American auto racing.-History:An international event, it was founded by William Kissam Vanderbilt II in 1904 and first held at a course set out in Nassau County on Long Island, New York. The announcement that the race was to be held caused...
race held in Long Island, New York.
A 2006 publication "The Origin of the Checker Flag - A Search for Racing's Holy Grail", written by historian Fred Egloff and published by the International Motor Racing Research Center at Watkins Glen
Watkins Glen International
Watkins Glen International is an auto race track located near Watkins Glen, New York, at the southern tip of Seneca Lake. The facility is owned by International Speedway Corporation...
, traces the flag's origin to one Sidney Waldon, an employee of the Packard Motor Car Company, who in 1906 devised the flag to mark "checking stations" (now called "checkpoints") along the rally-style events of the Glidden Tour.
In 1980, USAC starter Duane Sweeney started a tradition at the Indianapolis 500
Indianapolis 500
The Indianapolis 500-Mile Race, also known as the Indianapolis 500, the 500 Miles at Indianapolis, the Indy 500 or The 500, is an American automobile race, held annually, typically on the last weekend in May at the Indianapolis Motor Speedway in Speedway, Indiana...
by waving twin chequered flags at the end of the race. Previous starters had only used a single flag. Sweeney also marked the first use of twin green flags at the start of the race.
Celebrating a win with the chequered flag
In snowmobile water cross the chequered flag a attached to the racers' life vest, and the racer is awarded with a victory lap.In many short tracks, the flagman gives the chequered flag to the winner of the race, but a variety of other celebratory traditions, such as the burnout, the Polish Victory Lap and the Victory Lane or Victory Circle celebration, sometimes overshadows the chequered flag tradition.
Use outside auto racing
The chequered flag has become so well recognized that it is often used to indicate the conclusion of many things unrelated to auto racing. For example, some software installation programs display a chequered flag to indicate that a computer programComputer program
A computer program is a sequence of instructions written to perform a specified task with a computer. A computer requires programs to function, typically executing the program's instructions in a central processor. The program has an executable form that the computer can use directly to execute...
has been installed successfully.
Chequered flags were also posted at each corner of the end zones in the original Yankee Stadium when the facility was used by the New York Giants
New York Giants
The New York Giants are a professional American football team based in East Rutherford, New Jersey, representing the New York City metropolitan area. The Giants are currently members of the Eastern Division of the National Football Conference in the National Football League...
of the National Football League
National Football League
The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing...
from 1956 through 1973.
Flags in karting
The chequered, red, black, yellow, white, and green flags are used identically to how they are used in auto racing, as is the yellow and red striped flag.Other flags used include:
Flags in motorcycle racing
The chequered, red, yellow, white, and green flags are used identically to how they are used in auto racing. The yellow and red striped flag is used to indicate debris on the track.Other flags used include:
- A white flag with couped red cross, to indicate medical attention is required near the marshalling post. Can also mean an ambulance is on the course (generally a red cross is followed by the race being "red flagged")
- A black flag with white border, indicating that a rider must leave the course.
- A dark, rather than light blue flag, indicating that a faster motorcycle is approaching.
- A white flag with a "V", to indicate poor visibility ahead. Used at the Isle of Man TTIsle of Man TTThe International Isle of Man TT Race is a motorcycle racing event held on the Isle of Man and was for many years the most prestigious motorcycle race in the world...
festival.
Practicality of racing flags
Historically, the only means for race officials to communicate to drivers was through the usage of flags. With the advent of two-wayTwo-way radio
A two-way radio is a radio that can both transmit and receive , unlike a broadcast receiver which only receives content. The term refers to a personal radio transceiver that allows the operator to have a two-way conversation with other similar radios operating on the same radio frequency...
or full-duplex radios, this is not necessarily the case. Most drivers racing on paved short track oval courses do not rely on flags; rather, they are informed of track conditions by their crew chief
Pit stop
In motorsports, a pit stop is where a racing vehicle stops in the pits during a race for refuelling, new tires, repairs, mechanical adjustments, a driver change, or any combination of the above...
s and spotter
Spotter
A spotter is someone trained to look for something. The term has the following special meanings.*Weather spotter, an individual who observes the weather to inform other groups.*Storm spotter, a weather spotter who observes specific weather events....
s or by yellow / red flashing lights
Traffic light
Traffic lights, which may also be known as stoplights, traffic lamps, traffic signals, signal lights, robots or semaphore, are signalling devices positioned at road intersections, pedestrian crossings and other locations to control competing flows of traffic...
found on most oval tracks. Occasionally, though, some drivers must rely on the use of flags for information when they experience radio malfunctions. Flags are still used to tell the crowd of spectators what is happening. Dirt track and lower level racers are less likely to have radios than their paved track counterparts.
In contrast to smaller circuits, road racing drivers rely heavily on the use of flags. As it is impractical to have spotters covering all segments of a winding road course, the first indication to drivers of local hazards almost always comes from marshals stationed at various flag stations around the course. Missing or disregarding a flag can have critical consequences - as Mario
Mario Andretti
Mario Gabriele Andretti is a retired Italian American world champion racing driver, one of the most successful Americans in the history of the sport. He is one of only two drivers to win races in Formula One, IndyCar, World Sportscar Championship and NASCAR...
and Michael Andretti
Michael Andretti
Michael Mario Andretti is a retired American CART and Formula One driver and owner of the Andretti Autosport team in the IndyCar Series. Andretti is the son of Mario Andretti. His son is Marco Andretti.-Early career:...
discovered during a 1991 CART
Champ Car
Champ Car was the name for a class and specification of open wheel cars used in American Championship Car Racing for many decades, primarily for use in the Indianapolis 500 auto race...
race in Detroit, Michigan
Detroit, Michigan
Detroit is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people. As the seat of Wayne County, the city of Detroit is the largest city in the U.S. state of Michigan and serves as a major port on the Detroit River...
. Michael came around a blind corner at high speed, without heeding the yellow flag being displayed - and plowed into the back of a CART safety truck tending to another disabled car. Fifteen seconds later, his father Mario disregarded the same madly waving yellows and crashed into the car the safety vehicle was trying to assist.
Modern F1 cars and other high-end formula racing cars have information displays on their steering wheels which can flash up the word FLAG to warn drivers when they are entering a sector with a local yellow. Most new circuits and older ones used for F1 will employ trackside flashing lights at regular intervals, as a clearer way to signal yellow/green/red/blue/SC flag status to drivers than relying on them to spot a marshal waving a flag, especially so on modern circuits where there are large run-off areas which put the marshals well away from the actual track.
Further reading
- Martin, Mark & Tuschak, Beth (2005). NASCAR For Dummies (2nd ed.). Hoboken: Wiley Publishing. ISBN 0-7645-7681-X.