Do I need a motorcycle license?

Yes. To be legally covered, you need an International Driving Permit (IDP) that specifically includes motorcycle endorsement, paired with your home country's license.

How do I turn left in heavy traffic?

Do not cut across lanes. Pull over to the right, wait for a gap, and turn in stages, or perform a 'hook turn' by traveling straight through the intersection and turning once the light changes.

Is it safer to use Grab (ride-hailing) instead?

If you aren't an experienced rider, yes. Using 'Grab Bike' allows you to experience the traffic from the back of a bike without the stress of navigation.

How to survive and navigate motorbike traffic in Ho Chi Minh City

To cross the street safely, walk at a slow, steady pace without stopping or hesitating so drivers can predict your path. When riding, always wear a helmet, keep your speed under 30 km/h, and stick to the right side of the lane to let faster traffic pass.

Master the art of the street crossing. Step off the curb and walk forward slowly and predictably. Do not run, do not jump back, and do not stop. Motorbike drivers will flow around you like water; if you maintain a constant speed and trajectory, you are safe.
Choose your rental wisely. Rent a semi-automatic scooter (like a Honda Wave or Yamaha Sirius) rather than a heavy manual bike or a high-end scooter. They are easier to maneuver in tight gridlock and parts are available everywhere if you break down.
Use your horn as a warning, not an insult. In Vietnam, honking is for communication. Tap your horn when approaching blind corners or when overtaking to let others know you are there. It is standard practice, not aggression.
Mirror management. Most local bikes have one mirror. If you rent one, ensure it has two. Because traffic comes from all sides, you need to check your mirrors every 5 seconds, especially before turning left across traffic.

Do I need a motorcycle license?: Yes. To be legally covered, you need an International Driving Permit (IDP) that specifically includes motorcycle endorsement, paired with your home country's license.
How do I turn left in heavy traffic?: Do not cut across lanes. Pull over to the right, wait for a gap, and turn in stages, or perform a 'hook turn' by traveling straight through the intersection and turning once the light changes.
Is it safer to use Grab (ride-hailing) instead?: If you aren't an experienced rider, yes. Using 'Grab Bike' allows you to experience the traffic from the back of a bike without the stress of navigation.