DETROIT - Companies can now test self-driving cars on Michigan public roads without a driver or steering wheel under new laws that could push the state to the forefront of autonomous vehicle development.

The package of bills signed into law Friday comes with few specific state regulations and leaves many decisions up to automakers and companies like Google and Uber. But state officials say there are enough safeguards to keep the public out of danger.

The bills also allow automakers and tech companies to run autonomous taxi services and permits test parades of self-driving tractor-trailers as long as humans are in each truck. And they allow the sale of self-driving vehicles to the public once they are tested and certified, according to the state.