F{\AE}RDXEL: An Expert System for Danish Traffic Law

TL;DR

F{ extregistered}RDXEL is an explainable symbolic reasoning system for Danish traffic law that aligns with judicial decisions and has potential to support legal professionals.

Contribution

It introduces F{ extregistered}RDXEL, combining logic programming with an interactive interface, and demonstrates its effectiveness through empirical and expert evaluations.

Findings

F{ extregistered}RDXEL's conclusions match Danish judges' decisions on court cases.

Legal experts see potential for F{ extregistered}RDXEL to support real-world legal AI tools.

System shows promise for enhancing legal decision support in Danish traffic law.

Abstract

We present F{\AE}RDXEL, a tool for symbolic reasoning in the domain of Danish traffic law. F{\AE}RDXEL combines techniques from logic programming with a novel interface that allows users to navigate through its reasoning process, thereby ensuring the system's explainability. Towards the goal of better understanding the value of F{\AE}RDXEL, two evaluations of the system have been performed: (1) An empirical evaluation showing that for a selection of court cases, the conclusions of F{\AE}RDXEL align with those of Danish judges. (2) A qualitative evaluation from legal experts indicating that this work has potential to become a foundation for real-world AI tools supporting professionals in the Danish legal sector.