How to Find the 30cm Mark for Meeting Oncoming Vehicles in Subject 3?

[DeRuby]

When you hear the parking instruction, turn on the signal light, observe the traffic situation, and after confirming it's safe, steer the wheel to the right. When the raised part of the wiper is about to coincide with the right line, immediately straighten the direction. When the raised part coincides with the road edge line, the distance is exactly 30 centimeters. When the front one-third of the car is about to coincide with the right line, the distance is exactly 30 centimeters. Different vehicles may vary, so familiarize yourself with the test vehicle in advance. Adjust the rearview mirror before getting in the car. When parking, observe the position in the right rearview mirror. When the front and rear door handles coincide with the road edge line, the distance is exactly 30 centimeters.