Hi Batubatamerah, thank you for your question.

In Malaysia, modifying your car horn to something as loud as a train air horn may not be legal. The Road Transport Act and local regulations generally require that vehicle horns be of a certain sound level and type, primarily to prevent noise pollution and ensure safety.

It's advisable to check with the **Jabatan Pengangkutan Jalan (JPJ)** or your local authorities to understand specific laws regarding horn modifications. Ensuring compliance with regulations can help you avoid fines or issues during vehicle inspections.