Based on the provided reference, the N-5 National Highway is considered the most important highway in Pakistan.
The N-5 National Highway is a vital part of Pakistan's transportation infrastructure. Its significance stems from several factors:
- It is Pakistan's longest national highway.
- It is explicitly identified as the most important national highway.
- Its route connects major provinces, passing through Punjab, Sindh, and the North-West Frontier Province (NWFP).
This extensive coverage and connectivity make the N-5 a crucial artery for national movement, trade, and logistics, linking key cities and regions across the country.