What Does an Exclamation Mark Next to a Driver’s Name Mean in F1?
Exclamation marks next to the name of a driver during an F1 Grand Prix signify that the driver is either currently under investigation for an incident or has been penalized by the stewards. During a race, a driver can have a yellow or red exclamation mark next to their name, which explains the distinction between investigation and penalty.
Different Types of Exclamation Marks During an F1 Race

A yellow exclamation point means that a driver is under investigation for an incident that has taken place during the race. This stays until a decision is made by the stewards and the driver is either excused or penalized. If two drivers are involved in an incident on track and are being investigated, both will have a yellow exclamation mark next to their name for the duration of the investigation.
A red exclamation point means that a driver, who was earlier noted for any type of infringement, has now been found guilty of committing an offense by the stewards. This is usually accompanied by information on what penalty the driver is being given for the incident.

For example, Mercedes’ George Russell was investigated for leaving the track and gaining an advantage in the early stages of the US Grand Prix on Sunday. At first, a yellow exclamation mark appeared next to his name to show that he was being investigated. Following this, it turned into a red mark, as Russell was given a five-second time penalty.
The red exclamation point stays next to the driver’s name until they serve their penalty during the race.

Different Types of Penalties During an F1 Race
The most common type of penalty handed out during an F1 race is a time penalty. This may be five seconds or 10 seconds. This is handed out for infringements such as track limits violations, leaving the track and gaining an advantage or causing a collision on track.
A time penalty has to be served by a driver whenever they come into the pits to make a stop. The mechanics have to wait five or 10 seconds before they can make any changes to the car in the box. If the driver does not pit after getting a time penalty, the time is added to their final race time.

Drivers can also be handed a drive-through penalty for more serious infringements such as ignoring yellow flags, jumping a start and other safety-related errors. If given a drive-through, a driver must enter the pit lane, drive through it while adhering to the pit lane speed limit and rejoin the track without stopping for a change of tires.
A worse variation of the drive-through penalty is the stop-and-go penalty, when a driver must come into the pit lane, go into his pit box, wait for 10 seconds and then leave without any work being done to their car. This is usually handed out for dangerous driving and failing to slow down for double-waved yellow flags or similar serious infringements.