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Traffic Rules

  • Guam drives on the right. After a left turn, make sure you end up in the right-hand lane.
  • You may turn right on red after coming to a complete stop at the stop line and checking for pedestrians and cross traffic, if it is safe.
    *No right turn on red where a “NO TURN ON RED” sign is posted or the right-turn arrow is red.
  • The legal maximum anywhere on the island is 45 mph (about 72 km/h). Follow the posted limit on each road; there are 35 mph (56 km/h), 25 mph (40 km/h) and 15 mph (24 km/h) zones.
  • When a school bus stops and shows its STOP sign, traffic in both directions must stop. Wait behind the bus until it moves off.
  • At a STOP sign, stop completely before the stop line (or before the crosswalk or intersection if there is no line).
  • Roads get slippery when it starts to rain, so slow down and leave extra space to the car ahead.
  • The center lane marked with yellow lines or studs is for getting ready to turn left, not for driving along. Make U-turns only where signs or signals allow.
  • Driving with an open container of alcohol in the car, or passengers drinking in a moving car, is also an offense.
  • Using a phone while driving is prohibited.
    ● This includes waiting at a red light or sitting in traffic.
    ● You may use a phone to call the police or fire department in an emergency, hands-free, or when parked in a safe place.
    ● Violations are subject to fines.

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