Expressway Map

Trunk roads are busy roads which link important towns and districts. Some trunk roads are designated as expressways.

All expressways and most of the trunk roads are high standard multi-lane dual carriageways with grade separated interchanges and are designed to carry a high volume of traffic at a higher speed.

The following roads are presently designated as expressways. Other expressways will be built in the future.

A  Sha Tin Road ( Lion Rock Tunnel Road to Tai Po Road - Sha Tin )
B  Tolo Highway ( Tai Po Road - Sha Tin to Lam Kam Interchange)
C  Fanling Highway ( Tolo Highway to San Tin Interchange )
D  San Tin Highway ( San Tin Interchange to Castle Peak Road - Tam Mei )
E  Yuen Long Highway ( Shap Pat Heung Interchange to Lam Tei Interchange )
F  Tuen Mun Road and Tsuen Wan Road ( Wong Chu Road to Kwai Chung Road )
G  Tai Po Road - Sha Tin ( Fo Tan Road to Tolo Highway )
H  Sha Tin Wai Road ( Flyover and Tate's Cairn Highway, Sha Tin Road to Tolo Highway )
I  Kwun Tong Bypass
J  Island Eastern Corridor
K  North Lantau Highway ( Lantau Link Toll Plaza to Tung Chung Eastern Interchange )
L  Lantau Link ( North West Tsing Yi Interchange to Lantau Toll Plaza )
M  Tsing Kwai Highway ( West Kowloon Highway to Cheung Tsing Tunnel )
N  Cheung Tsing Highway ( Cheung Tsing Tunnel to North West Tsing Yi Interchange )
O  Tsing Long Highway ( North West Tsing Yi Interchange to San Tin Highway )

Road Sign

Start and continuation of an expressway

Road Sign

End of an expressway


Under the Road Traffic ( Expressway ) Regulations, there are special driving rules which apply to expressways. These rules are made to enhance road safety and to maintain smooth traffic flow along the expressways.

  • Keep to the nearside lane of an expressway unless you are heading for an offside exit or you are overtaking another vehicle, and overtake only on the offside of the other vehicle.
  • Medium goods vehicles, heavy goods vehicles and buses are prohibited from using the offside lane of an expressway where the carriageway has three or more traffic lanes available unless they are heading for an offside exit.
  • You must not drive on the verge or the central reservation of an expressway except during traffic diversion or vehicle breakdown. The boundary of the verge and central reservation is normally indicated by a continuous white line.
  • You must not U-turn or reverse your vehicle on an expressway.
  • You must not stop or park your vehicle on any part of an expressway except for breakdown or emergencies, and in these situations, you must turn on the hazard warning lights, and if possible drive off the carriageway and stop on the verge.
  • Cyclists and pedestrians are prohibited from using expressways. Wire fences are erected along the boundaries of expressway areas, and you must not climb over or go through these fences.
  • Learner drivers, public light buses, special purpose vehicles and any vehicle with an engine capacity under 125cc are not allowed to use an expressway, unless prior permission has been obtained from the Commissioner for Transport.

The rules below are generally applicable to trunk roads and those which are designated as expressways:

  • Vehicles tend to travel faster on expressways and trunk roads. The faster speeds on expressways and trunk roads mean that you need more time for almost every driving action. You need more time to slow down and stop. You need more time to change direction. As with driving on any road, you need to be fit and alert. You need to give yourself bigger margins than on ordinary roads such as more space between your vehicle and the one in front.
  • When driving on expressways and trunk roads your speed may be higher than you think. Not only may you under estimate the stopping distance for your actual speed but you may easily exceed the speed limit. Although you may feel safe – you must not exceed the speed limit for the expressway or trunk road or for your vehicle. There may be hidden dangers.
  • Higher noise levels, particularly in wet weather, may prevent other drivers from hearing your horn. Flashing your headlamps is usually a better warning of your presence when one is necessary. Be alert for such a warning yourself.
  • Change lanes only when there is need. Keep in the middle of the lane you are using and do not let your car wander from side to side or into another lane.

In this chapter you will find rules and advice that will help you drive safely on expressways and trunk roads.

Some of the more important points are:

  • Making sure you and your vehicle are in good shape – pages 36 and 37.
  • Joining a dual carriageway – page 73.
  • Looking well ahead to give yourself more time to react – page 61.
  • Using headlamps if visibility is reduced – page 77.
  • Maintaining a safe gap – page 47
  • Lane discipline and overtaking — pages 49 and 60.
  • Leaving a dual carriageway – pages 72 and 73.
  • Emergency stops and telephones – pages 122 and 123.
  • Keep left unless overtaking – page 63.
  • Overtake only the right hand side of another vehicle – page 60.
  • Vehicles may be driven onto or off an expressway only by way of slip roads at intersections – pages 72 and 73.

Road Sign

Route number on a direction sign

Road Sign

Trunk roads including expressways are assigned route numbers. These route numbers appear on direction signs to assist you in findding your way.A full description of the route numbering system of major roads is provided on pages 118.