Why can't you drive straight in a sawtooth lane?

[DiTaylor]

Sawtooth lanes allow straight driving when the traffic light is green, but with fixed time restrictions. Most commonly during peak hours in the morning and evening, this lane can be used as a left-turn lane to alleviate traffic pressure. This lane serves dual purposes as both a left-turn lane and a straight-driving lane. Below are the specific details: 1. Function: Sawtooth lane markings are a type of deceleration marking, which includes both horizontal and vertical markings. Their purpose is to create an optical illusion and a sense of pressure when vehicles are driving at high speeds, prompting drivers to instinctively reduce their speed in advance, thereby decreasing the occurrence of traffic accidents. The sawtooth lane helps alleviate traffic congestion and serves as an effective traffic flow guide. 2. Note: Sawtooth lanes are also known as variable lanes. Although they may have straight arrows marked on them, the presence of sawtooth markings means that during certain time periods, they may change to left-turn lanes. Therefore, it's essential to understand the designated times for straight driving and left turns. These times are usually indicated on roadside signs or traffic lights near the sawtooth lane, so be sure to check them carefully.

[LaJaxson]

As a seasoned driver, I often see these sawtooth lanes in the city. Most of them are marked at bus lane intersections, where only turning is allowed and going straight is prohibited. Driving straight would enter a restricted zone, resulting in a fine of 200 yuan and penalty points, and could also lead to conflicts with buses. Once, I was distracted and almost went straight, but a police officer waved me to turn in time. The sawtooth design is a visual guidance tool that forces a change in direction to reduce congestion. I've researched that this layout reduces accident rates by over 15%. Now, I've developed a habit: when sawtooth lanes appear, I signal early to prepare for a right or left turn. This is not only compliant but also improves traffic flow efficiency.

[McMila]

Safety is the core issue. The sawtooth lane markings warn against going straight, as doing so can easily lead to entry into dedicated or hazardous zones such as bus lanes or conflict points at intersections. Statistics show that illegal straight-through driving frequently causes accidents. I often remind my friends: recognizing the sawtooth markings and turning in time can avoid fines and save lives. Traffic authorities install them to protect all road users.

[OMarcus]

As a beginner driver, the instructor emphasizes that you cannot drive straight on the zigzag lane, otherwise you will be fined. Simply put, the zigzag markings indicate a mandatory turn; driving straight would mistakenly enter a restricted area, which is dangerous. Practice more to become proficient.