How Wide is a Dual Eight-Lane Road?
2 Answers
A dual eight-lane road is 2*15 meters wide. Below is relevant information: Lane width: Lane width [lane-width] (also known as standard lane width) refers to the width required for a column of vehicles to travel safely and comfortably on the road, including the external width of the design vehicle and the necessary clearance for passing, overtaking, or driving side by side. Dual eight-lane: A dual eight-lane road is 28 meters wide (each motor vehicle lane on urban arterial roads is 3.5 meters wide), with a central green belt of 5 meters, green belts between motor vehicle lanes and non-motor vehicle lanes on both sides totaling 6 meters (3 meters each), non-motor vehicle lanes on both sides totaling 11 meters (5.5 meters each), and the remaining 30 meters allocated to sidewalks on both sides (15 meters each).
I’ve driven on an eight-lane (four lanes in each direction) highway before, and it felt much more spacious. Generally, each lane is about 3.5 meters wide, so eight lanes add up to roughly 28 meters. However, in reality, there’s also a central median, which is typically 2 meters wide, plus shoulders on both sides, each about 1.5 meters wide, bringing the total width to over 35 meters. Driving on such a wide road is incredibly smooth—traffic jams are rare, overtaking feels safer, and side collisions are less likely. That said, maintenance costs are higher, as cleaning and repairs take more time. I often encounter these roads in big cities, especially during rush hour, where they really help ease traffic pressure. But I’d also remind everyone not to speed too much—more lanes can be distracting, so it’s crucial to maintain a safe following distance. Overall, this width makes travel more convenient and is a standard feature of modern urban transportation.
