
On a four-lane highway, the speed limits for each lane are as follows: the first lane is 100-120 km/h (usually reserved for small passenger vehicles), the second lane is 80-100 km/h, the third lane is 60-100 km/h, and the fourth lane is an emergency lane. Precautions for driving on the highway: Always strictly adhere to the speed limits. The maximum speed limit on China's highways is 120 km/h, and different lanes may have varying speed limits depending on the situation. When entering the main lane from an on-ramp, if there is an acceleration lane, use it to increase your speed to an appropriate level before merging. When merging, do not obstruct vehicles already traveling in the main lane. Clearly distinguish the function of each lane and drive accordingly. Generally, stay in the main driving lane and only use the overtaking lane when passing other vehicles to ensure smooth traffic flow. Always pay attention to roadside and overhead signs and markings. Drive slightly to the right to avoid running over the right lane divider, providing sufficient lateral distance for vehicles behind to overtake safely.

I've driven on the highway many times, and the speed requirements for the four lanes vary: the leftmost lane is the overtaking lane, with a maximum speed limit of 120 km/h, mainly used for quick overtaking or high-speed driving; the second lane from the left is the travel lane, where speeds are maintained between 100-120 km/h, the main lane for daily driving; the third lane from the right is usually a mixed lane, with speeds between 90-110 km/h, suitable for large vehicles or cautious driving; the far right lane is the emergency lane, strictly prohibited for any driving, only used for rescue purposes. As an experienced driver, I remind everyone to return to the travel lane promptly after overtaking and not to occupy the overtaking lane, as it can easily cause traffic jams or accidents. In bad weather, it's important to proactively reduce speed, especially in rain or fog, keeping it below 80 km/h to ensure safety first. My personal experience is that adhering to lane speeds can reduce the risk of rear-end collisions and make the journey smoother.

Recently got my driver's license and started driving on the highway. I'm curious about the four-lane setup: the overtaking lane is on the left with a speed limit of 120km/h, but driving too fast is unsafe; the middle-left lane is for general driving at about 100-120km/h; the middle-right lane is a mixed-use lane at 90-110km/h; and the far-right lane is strictly for emergencies, absolutely no driving allowed. As a beginner, I'm afraid of speeding tickets or improper lane changes, so I prefer to stay in the general driving lane at a slower speed to practice. Additionally, when entering or exiting, I reduce my speed to 60km/h to avoid sudden braking. Remember not to drive slowly in the overtaking lane, as it affects others; in rain or snow, reduce speed by 50% across all lanes and use the air recirculation mode for comfort. Gradually getting used to it makes driving more confident and relaxed.

Prioritizing road safety, the speed limits on four-lane highways are designed to balance traffic flow: the overtaking lane has a maximum of 120km/h for efficient passing while requiring vigilance against high-speed accident risks; the driving lane maintains 100-120km/h for steady traffic; the mixed-use lane permits 90-110km/h for trucks or slower vehicles; the emergency lane prohibits entry to prevent secondary collisions. I emphasize that speeding endangers both oneself and others—reduce speed below 80km/h in rain and use fog lights to maintain distance in fog. Additionally, always signal and check mirrors when changing lanes to avoid blind-spot accidents, as safe driving outweighs rushing.


