The 400cc expressway rule in the Philippines continues to spark debate among riders, commuters, and policymakers. Many believe the rule is outdated, as today’s 250–300cc motorcycles can safely maintain highway speeds and even outperform older big bikes in handling and braking. Advocates argue that allowing smaller displacement motorcycles on expressways would ease traffic congestion and make long-distance travel more accessible. On the other hand, critics point to safety concerns, vehicle stability, and enforcement challenges. As motorcycle technology advances, the question remains: should expressway access be based on displacement, or on a bike’s real-world performance and capability?