When travelling abroad by bus, minors under 16 must be accompanied by an adult (aged 18 or over).
However, minors aged 12 to 16 can travel alone on national lines if they hold an authorisation to travel alone which has been completed and signed by their legal representative or guardian.
To find the parental authorisation form, please click on this link.
Over 16s can travel alone.
On national lines minors must be in possession of an identity document (national identity card, passport or any document issued by a public authority including a photograph which resembles the individual). On international lines minors must be in possession of the documents required to cross borders (valid national identity card or passport).