The EU directive 2003/20/EC states that children must use an appropriate child seat until they reach the age of 12 years or until they reach a height of 135 cm. However for licensed taxis there is an exemption.
If no child seat is available, children of 3 years of age or over may travel as long as they wear an adult seat belt. Children under 3 years of age may be transported without a seat belt or safety harness as long as they travel in the rear of the vehicle.
You can upgrade to a speedy shuttle which stops at a maximum of just 4 stops for an extra 0.00 per person.