
No, crossing the line is not allowed. During the 90-degree turn in Subject 2 of the driving test, if the front of the vehicle crosses the line, 100 points will be deducted. Below is relevant information about the 90-degree turn: 1. Overview: The 90-degree turn is an assessment point in Subject 2 of the driver's test, evaluating the driver's ability to correctly manipulate the steering and accurately judge the inner and outer wheel differentials when driving through abrupt road changes. 2. Deduction points: If the wheels touch the protruding points, it results in failure; each time the wheels touch the road edge line, 20 points will be deducted; using reverse gear to complete the maneuver deducts 10 points; not using the turn signal or using it incorrectly deducts 10 points.

When making a right-angle turn, the car body does indeed sweep the line, which I have personally experienced. After driving for over twenty years, I often encounter this situation. When turning the steering wheel, the front wheels turn first while the rear wheels lag behind, causing the center of the car body to shift inward. If the road is narrow or you're driving a large vehicle, the side may scrape against the roadside line. This is especially true when driving an SUV and making a right turn in a narrow alley—the right side of the car body is prone to sweeping the line or even hitting the sidewalk. My lesson is to turn slowly, check the mirrors in advance to predict the path, and avoid rushing. Practice more to familiarize yourself with the vehicle's dimensions. Sedans with smaller turning radii pose lower risks, but safety comes first—try to avoid scratches whenever possible.

When driving the family SUV to work, I often make sharp right-angle turns, and the body swinging out of line always makes me nervous! Turning the steering wheel before the turn, the front of the car goes in, but the rear swings back and forth, and with a slight lapse in attention, it sweeps across the roadside line. The solution is to slow down before turning, leave a safe distance and not hug the edge too closely; check the rearview mirror to monitor the position of the rear wheels, and with proper speed control, it's easier to avoid. After driving a few more times and getting used to it, I basically don't make this mistake anymore, but I want to remind everyone: larger vehicles are harder to control, and beginners need to practice with extra caution.

From a vehicle design perspective, the tendency to cross lines during right-angle turns stems from the difference in turning radii between the front and rear wheels—the front wheels follow a smaller arc while the rear wheels trace a larger one, causing the vehicle body to swing toward the inside of the turn. When I make a 90-degree turn in my compact car, if the roadside is too close, the side of the car is prone to scraping the line; this issue is even more pronounced with larger vehicles. My advice is to ensure there's sufficient space before initiating the turn, reduce speed, and maintain smooth driving for enhanced safety.


