What are the dimensions and drawing method for the curve in Subject 2?
2 Answers
The radius for curve driving is set at 7.5 meters, with a road width of 3.5 meters. The arc length is three-eighths of a full circumference (outer arc length: 17.66 meters, inner arc length: 9.42 meters). Below is a related introduction to curve driving: Overview: Curve driving is an assessment point in Subject 2 of the driver's test, commonly known as the S-curve. The test requires the vehicle to drive on an S-shaped road of specified width without pressing the road edge lines, with smooth and flexible steering. Purpose: It assesses the driver's ability to maneuver the steering and control the vehicle during curve driving. The goal is to develop the driver's skill in steering application and mastery of wheel trajectory control.
I've been a driving instructor for nearly twenty years and am quite familiar with the dimensions of the Subject 2 curve test. It mainly refers to the width and turning radius of the S-curve. The standard dimensions are typically a lane width of about 7 meters and a curve radius of approximately 6 meters, ensuring sufficient space for vehicles to navigate the turns. The layout involves painting continuous S-shaped lines with white paint on concrete pavement, and trainees must drive slowly at low speed without letting the wheels cross the lines. This segment of the test evaluates steering precision. In my teaching, I use cones for simulation practice and emphasize smooth steering wheel movements. The dimensions are actually quite reasonable—if they were too large, it would be too easy, and if too small, it would be dangerous. It needs to be just right. During practice, pay extra attention to the inner wheel difference and the vehicle's position to avoid crossing the lines, making it easier to pass the test. Remember, safety comes first—crossing the lines will result in point deductions or even failing the exam.
