Highways in Taiwan are classified into five types: The system does not apply to other parts of Taiwan, namely Kinmen and Lienchiang counties, and islands in the South China Sea. Expressways in Taiwan may be controlled-access highways similar to National Freeways or limited-access roads. Most have urban roads and intra-city expressways (as opposed to Highway system) status, although some are built and maintained by cities. Pedestrians Pedestrian is one topic where few progress have been observed, from 429 in 2011 to a high of 458 in 2019 to 410 last year. The number of injured climbed, from 13,787 in 2011 to 15,589 last year. This record is related to infrastructure and education different from that of other industrialized territories. The numbering system As a general rule, the odd numbers represent north–south highways and even numbers represent east–west. The numbers increase moving west to east and north to south. Major north-south provincial highways are indicated by a one-digit number. Special routes of a highway use the same number, followed by a heavenly stem character. However, for English translation, these characters are replaced by letters in the alphabetical order. National highways National highways are freeways. History The first controlled-access highway, and a predecessor to the national highways in Taiwan, was the MacArthur Thruway, built in 1964 between Keelung and Taipei. Construction on the first modern national highway, National Highway 1 began in 1971. The northern section between Keelung and Zhongli was completed in 1974, and the entire freeway was completed in 1978. It runs from the northern harbor city of Keelung to the southern harbor city of Kaohsiung, while there was an branch (No. 1A) connecting to Chiang Kai-shek International Airport (now Taiwan Taoyuan International Airport). Construction began on the other freeways in the late 1980s. The northern section of the second north–south freeway (National Highway 3) between Xizhi and Hsinchu was completed in 1997. The No. 1A Branch was extended to link No. 3 Freeway at Yingge, Taipei, and renamed as the National Highway 2. Three other short freeways (No. 4, No. 8, and No. 10) were built to link the two north–south freeways in Taichung County (now part of Taichung City), Tainan County (now part of Tainan City), and Kaohsiung County (now part of Kaohsiung City), respectively. The entire No. 3 Freeway was completed in January 2004. To ease the congestion of No. 1 Freeway in the Taipei metropolitan area,