What can you drive without a drivers licence?

That would be a learner's permit.

In most countries, where a license, is required, it would be illegal to drive no matter the circumstances. However, depending on the situation, it is likely the authorities would take into account...

Most states have special laws for mopeds under 50cc's. Some states require special licenses, while others require no license at all.

I was driving without a licence and insurance and first time they caught me i had an accident and then another three times. They took me to court after 6 months and they give me £150 for driving...

Honest... there isn't much. I think you can drive a mini-motor(minature motocycle) on the road.