SINGAPORE'S newest expressway, the Kallang-Paya Lebar Expressway (KPE), has been ranked among the top international tunnels in a European report, in terms of safety and design.

The European Tunnel Assessment Programme assesses expressways around the world using 200 criteria, which include the preventive, detection and self-rescue features of a tunnel.

The Land Transport Authority (LTA) said yesterday that there was no mandatory requirement for tunnels in Singapore to be benchmarked against any international safety standards.