Highways in Taiwan - National Highways - Features - Length, Exits, and Entrances

Length, Exits, and Entrances

• Exit advance

• Freeway entrance

• The pre-2006 Taiwan freeway exit sign. The 27 indicates that the exit is located on the 27th kilometer of the freeway.

• The post-2005 Taiwan freeway exit sign. Provincial expressways also allow it in 2007.

Every one tenth of a kilometer is marked on the freeway with Arabic numerals to indicate freeway mileage; that is, the number of kilometers away from the northern end or western end of the freeway. Exit numbers are based on the freeway mileage. With the notable exception of exit-only signs, which are only expressed in Chinese (but with a right arrow indicating an exit-only lane), exit notification and system route reminder signs in the ROC freeway system are almost identical to their US counterparts.

There are four types of exit notification signs. The first notification sign appears two kilometers before the exit, providing the destination name and an Exit 2 km notice. The second sign appears one kilometer before the exit, providing the destination name and a Right Lane notice. The Right Lane notice warns the exiting driver to start switching to the right lane in preparation to exit and does not necessarily indicate that the right lane is an exit-only lane. The third sign appears a few hundred meters before the exit, providing the destination name and a right tilted arrow. The fourth sign is located at the exit and says Exit with a tilted right arrow.

Exit notification signs were slightly altered in December 2005. The green exit mileage label on top of the exit notification sign has been replaced with a yellow exit mileage label accompanied with the Chinese code name of the interchange. The Chinese code name of the interchange does not necessarily reflect the destinations listed on the exit signs and may represent the general location of the freeway interchange.

Long rectangular-dash dividers usually separate normal lanes. Short rectangular-dash dividers usually indicates a lane that is ready to turn into an exit, a merging lane, or a lane reserved for vehicles that have difficulty climbing high grade regions of the freeway.

Freeway entrances may have traffic lights to control the flow of vehicles entering the freeway.