Crossing double yellow lines results in a 3-point deduction. The central double solid yellow line indicates that vehicles are prohibited from overtaking or crossing the line. At double dashed yellow lines, U-turns or left turns are permitted. Key considerations: Whether single or double yellow lines, as long as they are solid, crossing is strictly prohibited, including for overtaking, turning, or making U-turns. Whether single or double yellow lines, if they are dashed, overtaking or U-turns are allowed under safe conditions. Single yellow lines are typically used on roads with up to four lanes (including bicycle lanes), while double yellow lines are generally used on wider roads. If one line of a double yellow line is solid and the other is dashed, vehicles may temporarily cross from the side with the dashed line for actions like overtaking or turning. Relevant regulations: Article 49 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China" stipulates that motor vehicles must not make U-turns at locations with no U-turn or no left-turn signs or markings, as well as at railway crossings, pedestrian crossings, bridges, sharp curves, steep slopes, tunnels, or other hazardous sections. Motor vehicles may make U-turns at locations without no U-turn or no left-turn signs or markings, provided they do not obstruct the normal passage of other vehicles and pedestrians.
