
For the third subject of the driving test, you need to tap the brake when going straight through an intersection. Going straight through an intersection: When you see an intersection ahead, follow the traffic lights if there are any, or adhere to safety principles if there are none. In both cases, you should tap the brake in advance to slow down, then proceed when the light turns green or it is confirmed safe to do so. Turning left or right at an intersection: For left or right turns, or where gear requirements vary by region, it is always correct to tap the brake to slow down before entering the turn. Passing through a crosswalk: When you see a crosswalk ahead, whether or not there are pedestrians crossing, you must press the brake to reduce speed. On flat roads with light traffic: If the speed is above 30km/h and only a brief brake application is needed, simply lightly tap the brake pedal without pressing the clutch pedal.

















I've thought about this for a long time. The main purpose of lightly tapping the brakes when going straight through an intersection is for peace of mind, especially during rainy slippery conditions or when visibility is poor at night. A gentle brake tap can help us check blind spots for suddenly appearing pedestrians or e-bikes. But it's important to brake lightly without causing the car to lurch forward, otherwise rear-end collisions become more likely. If the speed is already sufficiently reduced or the intersection is particularly clear, skipping the brake tap is perfectly fine. The key is to adapt flexibly—keeping a firm grip on the steering wheel while maintaining observation is far more practical than just focusing on braking.

After driving for eight years, I've found that the habit of tapping the brakes is quite dependent on the intersection. In old urban areas with small intersections where parked cars block the view, gently tapping the brakes about ten meters away from the intersection and reducing the speed to under 40 km/h feels safe. However, during rush hour when following the flow of traffic through traffic lights, it's better not to tap the brakes as it can easily cause the following car to misjudge. Once, I drove a friend's car equipped with a stability control system and noticed that it automatically adjusts wheel speed when passing through intersections, making manual brake tapping unnecessary. Nowadays, I increasingly feel that observation and anticipation are more important than fixed maneuvers while driving.

The driving instructor initially taught me to 'keep my foot on the brake when crossing intersections' but didn't enforce tapping the brakes. Through practice, I've learned to consider three key points: first, my own speed—if exceeding 60 km/h when approaching an intersection, I must slow down in advance; second, the condition of the vehicle ahead—maintaining distance is sufficient when following a large flow of traffic straight through; third, checking the rearview mirror—if a large truck is following too closely, tapping the brakes might actually trigger a rear-end collision. My habit is to ease off the accelerator early to coast, then decide whether to lightly apply the brakes before reaching the crosswalk, saving fuel and reducing mechanical wear.

Analyzing data from over a hundred minor collision cases reveals interesting patterns: 30% of rear-end collisions at intersections are caused by improper 'tap braking' while proceeding straight. The key lies in 'effective tap braking'—starting 50 meters before the intersection, gently pressing the brake pedal for 0.3 seconds to reduce speed by about 5 km/h. This activates the brake lights to alert following vehicles while maintaining lane stability. When visibility is obstructed, supplement this by flashing high beams. Remember, tap braking isn't for deceleration but to regain attention—after all, 99% of intersection accidents result from momentary lapses in concentration.

From a vehicle perspective, intermittent braking is quite ingenious: brief braking allows the ABS pump to build hydraulic pressure, reducing braking distance by 0.8 seconds in emergencies. However, turbocharged vehicles should be cautious, as intermittent braking can drop RPMs and potentially trigger turbo lag. OBD data from my modified car shows that one instance of intermittent braking at a steady 60 km/h through an intersection increases fuel consumption by 0.2ml. Recommendations based on vehicle condition: older cars should focus on preventing brake overheating, newer cars can utilize auto-hold features effectively, and hybrid vehicles are best served by switching to energy recovery mode for maximum eco-friendliness.


