Brush time refers to the need to take photos every once in a while during the learning process to prove that students are learning. Some require taking photos every 15 minutes, and some require taking photos every 30 minutes, depending on the requirements of the local traffic control department or driving school.

The Big Dipper Learning Car APP is an online learning platform, which mainly provides driving test registration and learning services for users who take the driving test, and also has comprehensive theoretical test question bank resources.