# Usability of Certain Symbols Indicating Automobile Safety Status Based on Youth Assessment
### Safety Symbols Used in This Research  
As previously mentioned, in order to verify the adequacy of the design solutions for the symbols used on car displays, 16 symbols indicating car safety and troubles connected with driving were selected. The chosen symbols represent very important information to the driver which influences the safety of occupants, other participants in traffic, and the vehicle itself. The names and descriptions of the basic functions of these symbols are as follows:1. Airbag (according to ISO 7000-2108 standard [21])  
An airbag warning symbol is a dashboard light that notifies drivers if there is something wrong with their car's airbag system. Normally, the light turns on for a few seconds each time the car is started to indicate that the system is working properly, after which it should turn off. However, if it remains lit, it may suggest a problem with one of the many airbags in the vehicle that needs to be fixed soon. This alert is important because if the indicator is on and the airbag system is compromised, the safety of the car's occupants is at risk in the event of a crash. 2. Engine stop indicator  
The engine stop symbol indicates a serious engine issue that requires the engine to be shut down. This could be due to a variety of reasons such as low oil pressure, engine overheating, or, for example, a malfunctioning sensor. This light may be accompanied by an audible alarm or chime. This indicator is important because it alerts the driver to stop the vehicle and take necessary action to prevent further damage to the engine. It is crucial for the driver to respond to the engine stop indicator immediately to avoid potential accidents and costly repairs. The driver should seek professional assistance from a qualified mechanic. 3. Check gauges indicator  
The check gauges symbol in automobiles is a warning light that appears on the dashboard. It is designed to alert the driver that one or more of their vehicle's essential systems are not functioning correctly. Typically, the indicator will illuminate when one of the gauges, such as the oil pressure or temperature, is indicating a problem. If the check gauges indicator appears, the driver should stop their vehicle as soon as possible and assess the issue to avoid further damage or potential accidents. 4. Immobilizer system indicator  
The immobilizer system symbol is a security feature installed in automobiles to prevent theft. It is a warning light on the dashboard that indicates whether the vehicle's security system is active or not. When the key is inserted, the immobilizer system checks whether it matches the vehicle's code. If there is a match, the engine is allowed to start, indicating the system is inactive. However, if the code does not match, the engine will not start, indicating the system is active, and the dashboard will show an immobilizer system indicator. 5. Auto door lock malfunction indicator  
The auto door lock failure symbol is an alert signal that appears on the instrument panel when there is a problem with the auto door locking system. This might result from a defective sensor, a compromised lock apparatus, or wiring complications. Addressing this alert is crucial due to the potential safety hazards it presents. Drivers should bring their vehicles to a reliable technician for prompt diagnosis and resolution of the issue. 6. Transmission failure (according to ISO 7000-1396B standard [22])  
This is a powertrain trouble symbol. The transmission failure symbol is a warning signal that appears on the dashboard of an automobile indicating a problem with the transmission system. The transmission system is responsible for transmitting power from the engine to the wheels of the vehicle. Therefore, any issues with the transmission system can affect the performance of the vehicle and can also lead to accidents. Early detection of transmission problems can prevent further damage to the transmission system and other related components. 7.