What are taxiway design principles?

• A. Main Gear Width; Cockpit to Main Gear Distance
• B. Wing Span; Tail Height
• C. Nose Gear Length; Engine Type
• D. Fuselage Length; Wheelbase

Answer: (A)

Taxiway design is driven by the space an aircraft occupies on the ground. The most important measurement is the main landing gear track—the distance between the two main wheels. This track sets how wide a taxiway must be to provide safe clearance on both sides and to accommodate turns without wings or tails brushing nearby objects. The cockpit-to-main-gear distance isn’t a standard factor used to size taxiways, so it doesn’t constrain taxiway width. Wing span does matter for ensuring enough clearance during turns and for avoiding wingtip contact, but it’s secondary to the main gear width. Other dimensions like nose gear length, engine type, fuselage length, or wheelbase are not primary determinants of taxiway geometry.