What does the sawtooth line on the road mean?

[DelEden]

Variable lane. It is mainly designed for sections with concentrated traffic during peak hours but fewer lanes, or sections with significant differences in traffic flow during morning and evening peak hours. When encountering such a lane, follow the instructions of the variable lane. Additional information: 1. Driving rules: Generally, the direction of a variable lane is adjusted based on time or traffic flow. When drivers are unsure of how to proceed, they can directly refer to the LED signal lights or the instructions on the signs and follow them accordingly. In simple terms, if it shows a straight lane, you can only go straight; if it shows a left-turn lane, then turn left; if it shows a right-turn lane, then turn right. 2. Driving regulations: According to the relevant provisions of the "Road Traffic Safety Law," vehicles must follow the signs, markings, and signal lights at intersections. Failure to comply may result in penalties for violating prohibitory signs and markings, including a fine of 100 yuan and 3 penalty points.