What does it mean when the vehicle body sweeps the line in Subject 2?

[EvelynRose]

Body sweeping the line means the vehicle body crosses the line. In the Subject 2 exam, if the vehicle body crosses the line, 100 points will be deducted, resulting in a failed exam. In addition to the vehicle body crossing the line, other actions that will deduct 100 points include failing to park properly in reverse, stopping midway, not following the prescribed route or sequence, and exceeding the allotted time. The full score for Subject 2 is 100 points, with evaluation criteria set for failing, deducting 20 points, deducting 10 points, and deducting 5 points. The exam is considered passed under the following conditions: ① For applicants of large passenger vehicles, tractors, city buses, medium-sized passenger vehicles, and large trucks, a score of 90 or above is required; ② For other vehicle types, a score of 80 or above is required. If you fail the Subject 2 exam, you can retake it once on the spot. If you do not take the retest or still fail the retest, the exam will be terminated, and the applicant must reschedule the exam after ten days. Within the validity period of the driving skill test permit, the number of scheduled attempts for Subject 2 and Subject 3 road driving skill tests cannot exceed five. If the fifth attempt still results in failure, the passing scores from other subjects will be invalidated.

[DeAllie]

As a driving instructor, I often hear students ask about this. 'Body sweeping the line' colloquially means that while the vehicle is moving, the tires don't cross the ground markings, but some part of the vehicle body exceeds them. The test grounds are equipped with infrared sensors that detect if the vehicle body blocks the signal lines, resulting in a penalty or even failure if 'sweeping the line' is detected. This is especially common during reverse parking and parallel parking—for example, when the rear bumper extends beyond the parking space line or the side mirror grazes the boundary line. The key is to maintain proper vehicle alignment and avoid turning the steering wheel too early or too late. During practice, it's best to have a partner observe and help you gauge the swing range of the front and rear of the car.

[VanLuna]

After repairing cars for over a decade, I've noticed many beginners don't understand the scanning line principle. Actually, as long as the vehicle's outer contour touches the ground markings, the undercarriage sensors will detect it. Last week, a young man failed his right-angle turn test because his side mirror brushed against the curb line. Key point: Pay special attention to the outward swing amplitude - when the front turns, the car body tilts, making the rear wheel position particularly prone to crossing boundaries. Here's a practical tip: Imagine the test site markings as walls, leaving at least two fingers' width between the car body and the 'wall' for safety. Most experienced students who applied this method during retests passed successfully.

[LeMalia]

I just passed Subject 2 and I totally get it now! Scanning the line means the car's shadow covers the ground marking. The instructor kept emphasizing rearview mirror adjustment: adjust the left mirror to see the rear wheel, and use the right mirror to check the door handle. Parallel parking is most nerve-wracking when the right side of the car scrapes the line - turn the steering wheel fully but half a beat slower. For reverse parking, only straighten the wheel after the rear passes the corner of the parking space. Aligning the wiper's raised point with the sideline works wonders. Remember, the test car is wider than the training vehicle, the exam markings are thinner than the driving school's, and there's minimal wiggle room for body sway.

[JanelleFitz]

From an engineering perspective, the line-sweeping judgment relies on the infrared scanning system. It triggers when the vehicle's projection enters the 10cm height zone above the marking line. Scanning points vary by model: sedans use the trunk lower edge, while SUVs check the rear bumper corner. The actual error margin is about 3cm, so be alert when the rearview mirror shows close proximity to the line. During reversing, observe the relationship between door handles and markings - steering is safest when rear wheels form a 45° angle with the garage corner. For spatial awareness training, apply sunscreen on the car body to simulate contact points.

[SanAaron]

From the examiner's perspective, the most troublesome issue is boundary line disputes. The testing system only recognizes infrared signals, meaning even decorative car parts or reflective strips touching the line count as violations. This frequently occurs during curve driving and slope parking: the hood sweeping the arc line during turns, or license plates grazing boundary lines when stopping. The key is developing boundary awareness - treating markings as actual barriers and cultivating the habit of making 30cm early corrections. Video reviews reveal that 90% of line-touching examinees had either over-adjusted seats or excessive head movements during observation.