How many seconds should you hold the key when starting the engine in Subject 3?

[DelLila]

You can release the key immediately after starting the engine in Subject 3. Below is relevant information about Subject 3: 1. Introduction to Subject 3: Subject 3, which includes the road driving skills test and the safety and civilized driving knowledge test, is part of the motor vehicle driver's license assessment. It is the abbreviated term for the road driving skills and safety and civilized driving knowledge test subjects in the motor vehicle driver's examination. The content of the road driving skills test varies depending on the type of vehicle being licensed. 2. Test Content: The road driving skills test for Subject 3 generally includes: preparation before starting, light simulation test, starting, driving in a straight line, shifting gears, changing lanes, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, crossing pedestrian crossings, passing school zones, passing bus stops, meeting vehicles, overtaking, making U-turns, and night driving.