How Many Lanes Does a Two-Way 4-Lane Road Have?
2 Answers
Two-way four-lane generally refers to a road with four motor vehicle lanes. Below is relevant information about two-way four-lane roads: Standards for two-way four-lane roads: A two-way four-lane highway is designed for speeds of 60-80 km/h, with a road width accommodating four lanes. A median strip and green belt can be installed in the middle, with each lane being 3.75 meters wide. When necessary, a non-motorized vehicle lane of at least 3.5 meters and a sidewalk of at least 4 meters must be established. Composition of two-way four-lane roads: A two-way four-lane road surface has the width of four lanes and two emergency lanes. A median strip is set in the middle, using high-grade pavement such as asphalt concrete or cement concrete, equipped with complete signs, markings, signals, and lighting devices. Pedestrians and non-motorized vehicles are prohibited from walking on the road, and intersections with other routes are handled via overpasses, pedestrian bridges, or underpasses.
I've been driving heavy trucks for over a decade. A bidirectional 4-lane road means there are a total of 4 lanes in both directions combined. On the road, you'll see a median barrier or double yellow lines separating the directions, with two lanes on each side. The two lanes on your side allow for easy lane changes and overtaking. This type of road is the most comfortable for long-distance driving, much safer than a two-lane road. When encountering a heavy truck, remember not to drive alongside it for too long, especially on uphill sections where the right lane is mostly occupied by large vehicles. In rainy weather, be cautious of deep water accumulation in the outermost lane—the middle lane is the most stable. In China, this bidirectional 4-lane design is commonly seen at highway toll stations, significantly improving traffic efficiency compared to bidirectional 2-lane roads.
