What is the width of an 8-lane road?

[August]

Standard lane width: 3.75 meters; Emergency stopping lane: 2.5 meters; Central divider: 1 meter; For an 8-lane road including emergency stopping lanes: 3.75X8+2.5X2+1=36 meters; Including other ancillary facilities (guardrails, etc.), it can be calculated as 40 meters. U-turn rules at traffic lights: 1. No U-turn allowed when there is no left-turn lane before the traffic light; 2. No U-turn allowed on the crosswalk at the traffic light, must pass the crosswalk before making a U-turn; 3. If there are clear signs prohibiting U-turns or left turns at the traffic light intersection, no U-turn is allowed at any time; 4. No U-turn allowed when the road centerline at the traffic light intersection is a double solid yellow line. If it's a double yellow line with one solid and one dashed, vehicles on the dashed side can make a U-turn, while vehicles on the solid side cannot; 5. If there are yellow grid lines at the traffic light intersection, U-turns are allowed, but vehicles must not stop on the yellow grid lines; 6. If there is a U-turn sign or a dedicated U-turn signal light, follow the green light instruction to make a U-turn; 7. If there is no U-turn light but there is a left-turn light, wait for the green light in the left-turn lane before making a U-turn.