An unrestricted dog can jump onto the driver's lap and block his view. Also, the dog's body can interfere with the steering if the dog jumps on the driver's lap. These things can cause accidents.
There have been accidents where small dogs climbed under the driver's brake pedal and interfered with their ability to stop. Dogs are known to get overly excited and jump from moving vehicles. In this situation, dog car seat belt leash can come in handy to save the pet.
Image Source: Google
The dog who likes to stick his head out the window is picked up by the strong wind and pulled out of his seat. It just hangs on the car door. He was slightly shaken, but unharmed. Without a dog leash, he would be thrown onto a busy street and would most likely die.
In the event of an accident, the injured dog can escape. Attacks can occur to people who try to help you and your pet. If a dog crashes into traffic, another accident can occur. When deciding which dog harness to use for your dog, make sure he can sit or lie down while he is wearing it.
Make sure the harness is comfortable but stable and functional by holding the dog on a leash attached to the car seat belt. This means there is no pressure on the dog's neck in the event of an accident. As you can see, there are reasons, both obvious and less obvious, why your dog should always be kept safe.