What is the width of a dual carriageway?

[ElizabethLynn]

In urban roads, a single lane is generally 3 meters or 3.5 meters wide, so a dual carriageway would be 6 meters or 7 meters wide. However, lane width is often narrowed to save land. Relevant information: 1. Introduction: Standard lane width: A bidirectional four-lane road is 27.5 meters; a bidirectional six-lane road is 211.25 meters; a bidirectional eight-lane road is 2*15 meters. The state has standards for the width of each motor vehicle lane on highways. For multi-lane highways above the third grade, the width of each motor vehicle lane is 3.5~3.75 meters. 2. Median strip: There is no uniform standard for central median strips, which are adapted to local conditions. A simple cement central median strip is one meter wide. If it is a central green median strip, there is no uniform standard for the width. Some 'image projects' roads can have median strips dozens of meters wide.

[Aliyah]

From my years of driving experience, the width of a two-lane road typically ranges between ten to twelve meters, designed based on the standard of three and a half meters per lane. I remember in the early days when driving long distances, some old sections were too narrow, making encounters with oncoming vehicles nerve-wracking. Nowadays, standard lanes allow both large and small vehicles to pass smoothly, greatly enhancing safety. The design also includes central dividers and shoulders, reducing interference from opposing traffic and the risk of emergency stops. It also depends on the location; for example, in mountainous areas or at city entrances and exits, the width might be adjusted by one to half a meter to accommodate traffic flow. In short, this width makes driving more comfortable and reassuring, even for beginners, avoiding minor collisions and lowering maintenance costs. The choice of width truly considers practical needs.

[VonDylan]

As a young car enthusiast, I find the width of dual lanes crucial for daily commuting. Typically, each lane is about 3.5 meters wide, totaling over 10 meters, which allows me to change lanes confidently on highways without constantly worrying about being squeezed. The design also considers different vehicle types, such as trucks and SUVs needing more space; otherwise, traffic jams or side collisions are more likely. I've discussed this in modification groups—lane width standards ensure basic safety and allow for driving strategy adjustments in bad weather. Wider lanes are especially needed in rain or snow to prevent skidding. This width comes from long-term practice, ensuring smoother traffic flow, fewer accidents, and a more efficient, relaxed driving experience.

[Stacy]

The width of a two-lane road is generally controlled at around eleven meters, with the focus on each lane being approximately three and a half meters wide. I have experience in road planning, and this dimension ensures safe vehicle passing and overtaking, especially on busy sections during peak hours, which helps reduce accident rates. The design also incorporates shoulder width to provide buffer space for emergencies. When the width is insufficient, drivers tend to become nervous, increasing the risk of fatigue driving. In summary, the standard considers multiple factors and is a practical, balanced choice.