What does a person holding a ball indicate as a fault?

[Jodi]

A person holding a ball indicates a fault in the safety system. The automotive safety system is primarily divided into two aspects: active safety systems and passive safety systems. The role of the active safety system is to prevent accidents from occurring, while passive safety involves the protection of vehicle occupants or the protection of collided vehicles or pedestrians in the event of an accident. To break it down further, vehicle body safety is also considered part of the active safety system, which refers to the resistance capability of the vehicle body structure design and materials against external hazards. Therefore, the quality of active safety largely determines the probability of accidents occurring, while the quality of passive safety mainly determines the severity of injuries to vehicle occupants after an accident.

[Felicity]

I've experienced wheel lock-up several times while driving, where the wheels suddenly stop rotating when I hit the brakes, causing the car to skid uncontrollably. This is especially terrifying in rainy or snowy conditions. I remember last winter when the roads were icy, I was driving to the countryside and had to brake hard to avoid hitting the car in front. The car kept sliding forward, and I felt like I had no control over the steering wheel—it gave me a real scare. Later, I learned that lock-up mainly happens when you brake too hard, preventing the tires from rotating in time, or when the brake pads and discs are worn out, causing uneven friction. To avoid this issue, I've made it a habit to regularly inspect the braking system, having a mechanic check the pads and fluid levels every six months. On slippery roads, I drive slower and apply the brakes more gradually instead of stomping on them all at once. If the car has ABS, never turn it off—it prevents wheel lock-up. On highways, I've also learned to anticipate situations ahead, easing off the throttle early to slow down rather than relying on sudden braking. After all, safety comes first.

[AliyahAnn]

As a car owner with over two years of driving experience, my first encounter with brake lock-up happened at a highway entrance on a humid day. The car ahead suddenly stopped, and when I slammed the brakes, my vehicle slid several meters before coming to a halt, nearly causing a rear-end collision – my heart was pounding. After researching, I learned that lock-up occurs when tires get stuck and can't rotate, which often happens with outdated brake systems or poor tire traction, such as underinflated tires or worn treads. Since then, I've checked tire pressure and brake pads seasonally. I've also become wiser while driving: maintaining safe distances, avoiding abrupt braking, and regularly cleaning mud/dust from wheels to reduce skidding risks. In emergencies, I recommend pumping the brakes (press-release-press) while using engine braking to gradually slow down – it's safer and saves repair costs.

[DelKevin]

When the tires lock up and the car slides during braking, this is usually caused by uneven brake pad wear, issues with the brake pump, or blockages in the hydraulic system leading to sticking. It commonly occurs during sudden braking or in low-temperature environments, where the tires instantly stop rotating and lose control. The consequences can be severe, potentially leading to collisions. To diagnose, check if the brake hoses are aged and whether the fluid level is adequate. In daily driving, avoid slamming the brakes and opt for smooth, gradual braking. If frequent lock-ups occur, consider replacing parts or upgrading to ABS.

[NevaehFitz]

Brake lock-up failure is extremely dangerous, especially when the car slides out of control during emergency braking. When I was younger, I had a minor accident because of this and hit a tree. Later, I learned to prevent it: checking the braking system is key, regularly cleaning dust and topping up fluid; driving habits need to change, slow down and brake gently, don't be reckless; drive slower in rain or snow and maintain distance. Safety first!

[OLevi]

I often encounter wheel lock-up issues when driving a manual transmission, mainly due to sudden braking causing the wheels to stop rotating and slide. There are multiple prevention methods: maintain an appropriate following distance to avoid sudden braking; regularly check tire pressure and tread to ensure grip; use engine braking for gradual deceleration; and perform regular maintenance on brake discs and pads for older cars. This approach saves both hassle and money.