In South Korea, speed limits are controlled at the national level by Article 19 of the Enforcement Regulations of the Road Traffic Act, although speed limits can be lowered if deemed necessary, or if they are going through cities, towns, villages, or school zones.

In some cases, the speed on some expressways is limited to 80 km/h, so there are some expressways with speeds that are strictly limited to the level of automobile-only roads such as South Korea's Olympic-daero, Gangbyeon-buk-ro, and Beonyeong-ro. These speed limits are as follows:

Gyeongbu Expressway (Cheonan Junction to Mokcheon IC)

Donghae Expressway (Haeundae Viewpoint to Haeundae IC)

Muan-Gwangju Expressway (Bukmuan IC to Muan Airport IC)

Yeongdong Expressway (Incheon direction Hoengseong rest area to Saemal IC)

Jungang Expressway (Chuncheon rest area to Chuncheon TG)

Jungang Expressway (Daegam JC Main Line Chuncheon to Busan)