The Asian Highway Network is analogous to the E-road network (and overlaps with it in several countries). Like the E-road network, it is designated by a UN agency and largely consists of concurrencies with national routes, making it another showcase for Americana’s concurrency support.

Most routes are tagged network=AsianHighway, but a couple are tagged network=AH or network=Asian_Highway.

Unfortunately, the shields aren’t standardized and vary from country to country:

• Blue rectangle, white text 🇦🇲🇰🇭🇲🇾🇲🇲🇵🇭🇷🇺🇹🇭🇻🇳
• Green rectangle, white text 🇦🇿🇨🇳🇮🇷
• White rectangle, black text 🇯🇵🇰🇷
• White rectangle, green border, black text 🇮🇩
• Green variant of Indian National Highway shield, white text 🇮🇳

Most countries use the same prefix on the sign:

• “AH” 🇦🇲🇰🇭🇨🇳🇮🇩🇯🇵🇲🇾🇵🇭🇷🇺🇰🇷🇹🇭🇻🇳
• “AH-” 🇦🇿
• “A” 🇮🇷🇹🇭
• “A-” 🇲🇲
• No prefix 🇮🇳