Just like humans, dogs can suffer from travel sickness. The dog will not understand why you have to use the car to move, so if you want to have a safe journey for him in the car, you have to associate it with a pleasant drive to the park. The dog will make the connection between the drive and the place of destination, so be sure that the dog’s first car trip isn’t on to the vet.
An adult dog is hard to convince to accept the ride in the car, so it is best to teach your puppy to get used to the car from a very young age.
The main effect of the travel sickness would be, as you probably know already, vomiting. But besides vomiting there are another signs like yelping, yawning, heavy salivation, restlessness, shivering or excessive licking. When you notice any of these signs or something likely , it is time to stop the car and let your dog have a walk and drink some water, this will calm him/her down. Even if you have already eliminated the stress, your dog can still get carsick, but this is otherwise natural. So you have to prepare your dog before the trip.
Preparation before the trip consists of not feeding the dog at least 3-4 hours before leaving with the car! But be sure the dog is sufficiently hydrated.
During the car ride, leave the car window open a bit (a few centimeters ), so that fresh air enters the car continuously.
Another important thing is that just like us humans, the dog needs to look ahead to cope with car sickness. You can help your dog to have the right position by buying it a special harness for the car or if you want the transport to be made within a cage be sure to lay down a comfortable blanket.
When you travel, It's good to have a few accessories in the car ready, which are: towel, napkins and water bottle.
If the trip is very long it is recommended that you take a 10-15 minute break every hour so that your dog can get a breath of fresh air and do some exercise.
Before you go on a trip with your dog you should consult the veterinary doctor to recommend you some meds to prevent vomiting.