第四章行车隧道及管制区
交通流量—大榄隧道
| 年份 | 交通量（辆次） | |||
| 南行 | 北行 | 双程合计 | 平均每日 | |
| 2010 | 9,091,458 | 8,916,439 | 18,007,897 | 49,337 |
| 2011 | 9,680,941 | 9,435,825 | 19,116,766 | 52,375 |
| 2012 | 10,546,368 | 10,246,363 | 20,792,731 | 56,811 |
| 2013 | 11,109,947 | 10,772,799 | 21,882,746 | 59,953 |
| 2014 | 11,582,151 | 11,134,873 | 22,717,024 | 62,238 |
| 2015 | 11,561,011 | 10,952,268 | 22,513,279 | 61,680 |
| 2016 | 11,459,835 | 10,851,729 | 22,311,564 | 60,961 |
| 2017 | 11,424,702 | 10,738,493 | 22,163,195 | 60,721 |
| 2018 | 11,559,747 | 10,896,026 | 22,455,773 | 61,523 |
| 2019 | 11,038,352 | 10,440,343 | 21,478,695 | 58,846 |