
Sawtooth lane green light allows driving straight, but there are fixed time regulations, generally used as a left-turn lane during peak commuting hours. The following are the functions of the sawtooth lane: 1. The sawtooth lane line is a type of deceleration marking, which can be divided into horizontal and vertical markings. Its purpose is to create an illusion of pressure when vehicles are driving at high speeds, prompting drivers to instinctively reduce speed in advance, thereby reducing the occurrence of traffic accidents. 2. The sawtooth lane is a variable lane, which is distinctly different from ordinary lanes. 3. The interior of the sawtooth lane is densely packed with small sawtooth squares, unlike ordinary lanes. The purpose of the sawtooth lane is to alleviate traffic congestion and serve as a diversion.

I've driven on many urban roads, and the sawtooth lane is essentially a variable lane, marked with zigzag lines on the signage. Whether you can go straight when the light turns green depends on the specific directional indicators for that lane at the time. Every morning when I take that tidal lane to work, during peak hours it becomes a left-turn-only lane, so even if the light is green, I can't go straight. But in the afternoon return trip, if it changes to a straight-ahead indicator, then I can drive straight through on green. The key is to check the signs above or beside the lane—they display the arrow direction in real time. Once, I focused on the traffic light and missed the lane sign, ended up driving straight into a left-turn lane and got a ticket. This design really tests a driver's observation skills. Always pay attention to the lane guidance signs—they determine the driving direction, not just the traffic light color.

I live in the city center and pass through these serrated-marked lanes every day. The traffic rules for this special lane are actually quite intuitive—it entirely depends on the current directional sign display. A green light only indicates that the intersection is passable, but the specific operation depends on the real-time arrow indicators of the variable lane. For example, during the morning rush hour, if it shows a left-turn arrow, you can only turn left when the light is green; at noon, if it shows a straight arrow, you can go straight when the light is green. Many new drivers get confused, thinking the green light applies to all lanes. In reality, you need to check the lane indicator screen hundreds of meters in advance and not hesitate when approaching the intersection. I also suggest that the traffic department set up more prominent reminder signs at the starting point of the serrated lane to reduce the probability of violations.

I understand that this zigzag marking indicates a variable direction lane. Whether you can go straight when the traffic light is green depends on the current function of the lane. The key is to observe the electronic sign above the lane—you can proceed when it shows a straight arrow, and must turn left when it displays a left arrow. The design is quite , using ground textures and electronic screens to regulate traffic flow. Always confirm the directional signs when passing through, as this is crucial for safe driving. After all, enforcement of rules may vary by city, so following the actual instructions is the safest approach.

Having driven for seven or eight years, what I fear most is taking the wrong lane. The green light rules for serrated lanes are quite special. Whether they allow straight driving is completely different from regular green lights—it entirely depends on the current electronic signage. Last week, I encountered this on Chaoyang Road: the intersection had a green light, but the lane sign showed a left-turn arrow, meaning I could only turn left, not go straight. The principle is that such lanes dynamically allocate functions based on traffic flow—during morning rush hour, they might only allow left turns. When passing through, always slow down in advance and clearly check the direction indicated by the electronic display. Ignoring this can easily lead to mistakenly entering the wrong lane and committing a violation. Remember: the traffic light is just a go-ahead signal, but the guiding arrow is the actual driving instruction.

I pass by two sawtooth lanes every day, here's a practical tip: when the light turns green, don't rush forward—first check the overhead or side-mounted variable message signs. These electronic displays show real-time lane directions—a straight arrow means you can go straight through, while a left-turn arrow means you must turn left. Once on a rainy day when the sign was blurry, I almost drove straight into a left-turn lane. Now I've learned to start checking lane guidance from 50 meters before the intersection. Also, note that directions often change during rush hours—for example, the lane near my home is mandatory left turn from 7 to 9 AM, and straight-only during other times. This design improves road network flexibility but increases decision-making difficulty.


