Neighbour keeps blocking my private access road with her car. What are my options?

I am the owner of a private access road through which my neighbours including myself have to pass to use their car parking facilities (Garage). One of my neighbours keeps parking her car on the access road thus causing an inconvenience for myself and other neighbours. I have written to her to stop, but she has refused. What are my options? Can I clamp her car? Can I issue her a parking ticket and then a fine? Kindly advice, please. The title plan clearly shows that the access road belongs to my property