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Road-Tripping With a Dog: Restraint, Stops and Motion Sickness

Safe restraint in the car, how often to stop, and practical fixes for a dog that is sick every journey.

By Tom Brennan6 min readPublished 2026-03-14Updated 2026-08-19

Restraint is a safety issue, not a preference

An unrestrained dog is a projectile in a collision and a serious driver distraction beforehand. A crash-tested harness clipped to a seatbelt anchor, a secured travel crate, or a fitted dog guard behind a full boot barrier are the realistic options — a dog loose on the back seat is not.

Building up to long journeys

Start with five-minute drives to somewhere good, like a park, so the car predicts pleasant things rather than only vet visits. Extend gradually before attempting a multi-hour trip.

  • Stop every two to three hours for water, a toileting break and a short walk
  • Never leave a dog alone in a parked car — temperatures inside rise dangerously within minutes even on mild days
  • Feed a light meal a few hours before travel rather than immediately beforehand

Motion sickness is common and treatable

Puppies are especially prone because the balance structures of the inner ear mature after the sickness response does; many grow out of it. Facing forward, cracking a window slightly, and travelling on an emptier stomach all help. For dogs that are sick on every trip, a vet can prescribe an anti-nausea medication that is genuinely effective, rather than relying on ginger biscuits or wishful thinking.

Frequently asked questions

Can I use a regular walking harness in the car?
Only if it is specifically crash-tested for vehicle use; a standard walking harness is not designed to withstand collision forces.