Can Autonomous Vehicles Drive on Highways?

[ElleAnn]

Autonomous vehicles can drive on highways. Below is an introduction to the speed regulations for two-lane and three-lane highways: 1. Two-lane highways: This refers to highways with two lanes in the same direction. The speed range for the right lane is 60 to 100 kilometers per hour, while the left lane has a speed range of 100 to 120 kilometers per hour. 2. Three-lane highways: This refers to highways with three lanes in the same direction. The speed range for the far-right lane is 60 to 90 kilometers per hour, the middle lane is 90 to 110 kilometers per hour, and the far-left lane is 110 to 120 kilometers per hour. The left lane is designated as the overtaking lane, hence it has a higher speed limit.

[GiaLee]

I often drive on highways and am quite interested in autonomous driving technology. In reality, whether autonomous vehicles can currently operate on highways depends on local regulations. In China, fully autonomous driving is not yet permitted; most vehicles only offer partial automation (e.g., Level 3 or Level 4), requiring a human driver to be ready to take over at any moment—otherwise, they are not allowed on highways. This is because highways involve high speeds and complex scenarios, making accidents more likely if sensors fail or weather conditions are poor. However, certain models from Tesla or XPeng, for example, offer automated assistance features on specific road sections, capable of handling simpler tasks. In places like California, USA, testing is underway, but strict approval is required before deployment. Overall, the technology is still evolving, and it’s safer to rely on yourself while driving—don’t fully trust the machines. Safety always comes first.

[DelThomas]

As a long-time enthusiast studying automotive technology, I find this question quite interesting. Autonomous vehicle technology isn't yet mature enough for highway use, with the main challenges lying in high-precision mapping and real-time decision-making. Highway environments demand that sensors (like radar and cameras) accurately handle lane changes, sudden obstacles, and high-speed moving objects, but in reality, blind spots or interference often lead to errors. Currently, automakers like Waymo or Baidu Apollo only test in closed or low-traffic areas, not daring to directly open highways. On the regulatory front, China requires all vehicles to have human control, with similar rules in other countries; the EU also has safety certification standards for oversight. If AI becomes more robust and policies relax in the coming years, gradual highway permissions might follow, but this will take time—after all, human lives are at stake, and recklessness isn't an option.

[LeGraham]

I've been driving for many years and have experienced situations where the automatic assistance system failed on the highway, which was quite frightening. Currently, autonomous vehicles cannot operate completely independently on highways due to the complexity of regulations and safety issues. For example, sensors are prone to misjudgment in rain or snow, and system response delays during highway congestion can lead to rear-end collisions. Laws in various countries, such as the United States and China, require human supervision to prevent accidents. From a technical perspective, automakers are working hard, but for now, it's best to treat it as an auxiliary tool and not rely on it too much.

[DiRiver]

From a practical perspective, the use of autonomous vehicles on highways is still quite limited. Currently, mainstream automakers' models can only achieve partial automation on pre-mapped routes, such as assisted lane changing or adaptive cruise control, but full hands-free operation is not yet feasible. Regulations require human supervision, otherwise it would be non-compliant. Highway environments are highly variable—sudden braking or animals crossing—and systems may not always respond promptly. In China, there are pilot programs in test zones, but these are restricted to low-speed segments. I recommend maintaining caution until the technology becomes more stable. If AI advancements and regulatory relaxations occur in the coming years, the scenarios might expand, but safety remains paramount.

[DelLukas]

I've talked to many drivers, and everyone is curious whether autonomous vehicles can easily handle highways. The reality is, they can't yet. Current technologies like LiDAR are impressive, but they still fall short in managing high-speed traffic, often misjudging paths due to shadows or strong light. On the regulatory front, globally, including in Japan and Europe, human control is emphasized as crucial, with highways prohibiting full autonomous modes to prevent accidents. China allows testing in some areas, but a backup driver is mandatory. From personal experience, driver assistance systems are quite useful in reducing fatigue, but don't count on them to operate independently, especially at night or on winding roads. The industry is still in development, so with patience, breakthroughs may come in the future.