궤도·토목 기술은 선진국에 비하여 기술 차이가 비교적 작으나, 안전·방재의 기술은 전진국에 비하여 차이가 크다.
The technological difference in track and civil engineering technology is fairly tiny compared to compared to advanced countries, but the difference in complete safety and disaster prevention technology is large in comparison to that of advanced countries.