By law, tunnels must have various safety facilities, depending on their length and the level of potential danger. Tunnels longer than 500 meters must have an escape route, for instance, while some are required to have broadcasting speakers installed to warn drivers of an accident ahead.

The report given by the ministry showed that 86 of 236 tunnels on highways and 133 out of 278 tunnels on national roads did not have the mandatory escape routes. It also said 27 of 192 highway tunnels and 40 of 231 national road tunnels did not have the needed speakers.

Also missing were emergency phone boxes, automatic fire detectors and entrance blockades, according to the report.

Rep. An Ho-young, a member of the parliamentary committee on transportation who had asked for the ministry data, said the chances of an accident turning into a bigger disaster is especially high inside tunnels because paths for escape are limited and drivers cannot see what's ahead. "It's a serious problem threatening people's safety that despite such likelihoods, appropriate anti-disaster facilities are missing."  (Yonhap)