Road Safety in Guam

• Drive on the right side of the road — same as the US mainland and most of the Americas.
• Speed limits: 25–35 mph in villages and residential areas, up to 45 mph on main roads like Marine Corps Drive.
• Seat belts are required by law for all passengers in all seats.
• Child car seats are required for children under 8 years old or under 4'9" tall.
• Using a handheld mobile phone while driving is illegal — hands-free devices only.
• International visitors: most can drive with a valid home-country license for up to 30 days. Japanese, Korean, and most nationality drivers may use their license without an IDP.

Guam's main roads are generally in good condition, but secondary and rural roads can present challenges.

• Potholes are very common, especially on secondary roads and village streets — drive slowly and watch the road.
• Roads can flood rapidly during heavy tropical downpours — never attempt to drive through standing water.
• Some roads become impassable after typhoons — check Guam Department of Public Works updates.
• Military base perimeter roads have restricted access — look for signage and do not enter military zones.
• Southern Guam's roads are narrower and more winding than those in the north — allow more travel time.

• Limited street lighting on rural roads and in some villages — drive very slowly at night in unfamiliar areas.
• Pedestrians often walk roadside as sidewalks are absent on many village roads — stay alert.
• Deer (Philippine deer) may cross roads especially in southern Guam and at night.
• Road construction is ongoing across the island — expect temporary lane closures.
• After typhoons, roads may have debris and fallen trees — proceed slowly and cautiously.
• No roadside emergency phones exist on Guam — always carry a fully charged mobile phone.

• Guam's DUI blood alcohol limit is 0.08% — same as the US mainland.
• DUI is strictly enforced with heavy fines, license suspension, and potential jail time.
• Zero tolerance for drivers under 21 years old — any detectable alcohol is a DUI offense.
• Local taxi services and rideshare options are available in Tumon and Tamuning — use them after drinking.

• Google Maps provides reliable navigation across Guam — download the map offline before travel.
• Parking is generally available at malls (Micronesia Mall, GPO), beaches, and major attractions.
• Avoid parking near military base entrances or in marked restricted zones.
• Most rental car companies are located at GUM Airport arrivals and in Tumon — compare rates before booking.