Ha Giang Loop (North): Extreme mountain passes; requires 3–4 days.
Ho Chi Minh Road (West): Remote, scenic, light traffic along the Lao border.
Hai Van Pass: Famous coastal pass near Da Nang.
Strict IDP Rule: Vietnam officially accepts only 1968 Convention IDPs. The 1949 IDP (issued by USA/Australia) is not valid. Police in Ha Giang actively fine/impound for this.
Blue Card: Always carry the bike's registration card (Blue Card).
Alcohol Limit: 0.00% BAC (Zero Tolerance). Fines are heavy.
Traffic: Chaotic.
Helmets: Mandatory for rider and passenger.
Fuel Info: Widely available. "Ron 95" is standard unleaded.
Apps: Google Maps is standard.
Connectivity: Viettel has the best coverage in remote/border areas.