第四章行車隧道及管制區
交通流量—海底隧道
| 年份 | 交通量（輛次） | |||
| 南行 | 北行 | 雙程合計 | 平均每日 | |
| 2010 | 22,090,417 | 22,040,988 | 44,131,405 | 120,908 |
| 2011 | 21,954,454 | 22,044,529 | 43,998,983 | 120,545 |
| 2012 | 21,605,813 | 21,660,111 | 43,265,924 | 118,213 |
| 2013 | 21,383,502 | 21,231,577 | 42,615,079 | 116,754 |
| 2014 | 21,158,721 | 20,885,540 | 42,044,261 | 115,190 |
| 2015 | 21,314,992 | 20,923,506 | 42,238,498 | 115,722 |
| 2016 | 21,151,721 | 20,820,948 | 41,972,669 | 114,679 |
| 2017 | 20,910,098 | 20,617,698 | 41,527,796 | 113,775 |
| 2018 | 20,689,706 | 20,351,018 | 41,040,724 | 112,440 |
| 2019 | 19,602,499 | 19,335,367 | 38,937,866 | 106,679 |