Price-management of traffic congestion: Hong Kong’s Lion Rock Tunnel

Kang Hua CAO, Yuk Shing CHENG, Chi Keung WOO

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2 Citations (Scopus)


Hong Kong drivers face rush-hour traffic congestion at the Lion Rock Tunnel (LRT) which interconnects the Northeast New Territories and the Kowloon Peninsula. The LRT’s flat toll is HK$8 (≈US$1.03), much lower than the Tate’s Cairn Tunnel’s (TCT’s) vehicle-differentiated tolls of HK$13 to HK$34 per vehicular trip. We develop two proposals to raise the LRT’s toll and reduce the TCT’s tolls. Using the monthly data available from the Hong Kong Transport Department for the 15-year period of 2000-2014, we estimate a Generalized Leontief demand system to document statistically significant (p-value < 0.05) tunnel usage responses to these toll proposals. As the two tunnels’ elasticity estimates vary by traffic direction, a directional toll proposal may further ease the LRT’s rush-hour congestion. Hence, Hong Kong can price-manage the LRT’s congestion because a decrease in the LRT’s total usage likely reduces the LRT’s peak usage that occurs during the rush hours. Copyright © 2017 World Conference on Transport Research Society. Published by Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)699-706
JournalCase Studies on Transport Policy
Issue number4
Early online dateJul 2017
Publication statusPublished - 2017


Cao, K. H., Cheng, Y. S., & Woo, C. K. (2017). Price-management of traffic congestion: Hong Kong’s Lion Rock Tunnel. Case Studies on Transport Policy, 5(4), 699-706. doi: 10.1016/j.cstp.2017.07.006


  • Traffic congestion
  • Transportation demand management
  • Revenue-neutral toll proposals
  • Lion Rock Tunnel
  • Hong Kong


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