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Introduction

There are 6 road tunnels in Singapore:

1.      Central Expressway (CTE)

2.      Kallang-Paya Lebar Expressway (KPE)

3.      Marina Coastal Expressway (MCE)

4.      Fort Canning Tunnel (FCT)

5.      Woodsville Tunnel (WVT)

6.      Sentosa Gateway Tunnel (SGT)

Let us share how to drive safely in road tunnels and what to do during an incident or emergency.

Key Safety Message

When driving in road tunnels, motorists are advised to

1.        follow overhead lane use signs and traffic message signboards

2.        don’t forget to switch on vehicle headlights and tune in to a local radio station

At a Glance

Know your tunnel

Safe Tunnel Design and Tunnel Incident Management

Driving safely

Do’s and Don’ts

Restrictions and prohibitions in road tunnels.

Pay attention to Emergency Alerts and Facilities in the tunnel

Look out for life-saving Emergency Alerts and Facilities in our tunnels during an incident or emergency:

What to do in an emergency in a tunnel:

1) your vehicle has broken down or met with an accident

2) when approaching an accident site in the tunnel

3) there is an emergency in the tunnel

What you should do if your vehicle is involved in an incident in a tunnel:

 

What you should do when approaching an accident site:

1.       Follow lane use signs above the lanes in tunnels

2.       Avoid lanes with a Red Cross (X) above. Proceed to drive past the accident site by following the Green Arrow Lane Use Sign above lanes that are passable.

3.       Stop your vehicle when all Lane Use Signs show Red Cross (X) above the lanes

4.       Follow advisories on traffic message signboards

5.       Follow directions of police officers or marshals managing the incident

 

What you should do if there is an emergency in the tunnel:

1.       If you hear the fire alarm, PA announcements or see flashing lights in the tunnel, tune in to any local radio station for LTA emergency announcements;

2.       Drive out via the nearest exit where possible;

3.       Follow lane use signs above the lanes;

4.       If instructed to evacuate and you cannot drive further, turn off your vehicle’s engine, leave your vehicle and go by foot to the nearest emergency exit marked by flashing lights;

5.       Follow directions of police officers or marshals managing the incident

If you are approaching a road tunnel, read the traffic message signboards and take another route if the tunnel is closed.

General restrictions in our road tunnels

General restrictions for road and expressway tunnels in our Road Traffic (Expressway Traffic) Rules.

Know Your Tunnel

As road tunnels are confined spaces, it is important for motorists to drive carefully and be familiar with emergency procedures when an incident or emergency occurs in the tunnels.

All our road tunnels are monitored round the clock by LTA’s Operations Control Centre. When an incident occurs, our emergency protocol will be activated to manage the incident. LTA response teams will also arrive at the incident site to assist motorists. Read about how LTA manages traffic incidents on expressways and in tunnels.

In the event of a fire, all our road tunnels are equipped with a ventilation system to remove smoke from the tunnel, while the MCE, Woodsville Tunnel and Sentosa Gateway Tunnel are equipped with an overhead water sprinkler system to help fight fires.

To facilitate evacuation on foot, there are emergency escape staircases and cross passage doors located within longer tunnels such as the CTE, KPE and MCE.

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Ventilation system in tunnel
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Overhead water sprinkler system in tunnels

Driving Safely in Tunnels

Here are the do’s and don’ts when driving in road tunnels:

Do's Don'ts

Plan your route  in advance

Speed Tunnel speed limits are:

  • 80 km/h for CTE, MCE and KPE, except for some bends in KPE
  • 50 km/h for FCT and WVT
  • 40 km/h for SGT

Turn on your vehicle headlights

Overtake or tailgate, and avoid cutting across lanes

Tune in to a local radio station

Stop unless there is an emergency

Follow traffic signs

Reverse your vehicle

Stay in lane

Drive on the road shoulder

Insert CashCard into IU in advance

Repair your vehicle or change tyres
Make sure you vehicle has enough fuel Attempt to refuel your vehicle

Secure all goods safely

 

Keep left if you are a heavy vehicle

 

The following restrictions apply in all road tunnels:

  • No pedestrians
  • No bicycles, tricycles or trishaws
  • No vehicles higher than 4.5m
    • For Sentosa Gateway Tunnel, the vehicle height restriction is 3.5m.
  • No vehicles wider than 3m
  • No vehicles longer than 13m
  • No vehicles transporting hazardous materials such as petrol, liquefied petroleum gas (LPG), etc.
  • No motorcycles with side cars attached, invalid carriages, three-wheeled vans, trailers with containers, concrete trucks, cranes, excavators, road pavers, tractors, dumpers, wheel loaders, bulldozers, graders, mobile concrete pumps or hydrant dispensers
    • For Sentosa Gateway Tunnel, no buses or goods vehicles are allowed

More information on general restrictions for road and expressway tunnels can be found in Road Traffic (Expressway Traffic) Rules.

Emergency Alerts and Facilities in Road Tunnels

Look out for these safety alerts and facilities during an incident or emergency:

Lane Use Signs

When inside the road tunnels, follow the lane use signs above each traffic lane.  They show if the lane ahead can be used.

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In the event of any major obstruction or emergency, red crosses may be lit across all lanes. This indicates that you should not proceed any further.

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Traffic Message Signboards

As motorists approach our road tunnels, they will see electronic traffic message signboards along the road.  These signboards also appear above the road inside longer tunnels such as the KPE and MCE. Look out for traffic advisories for traffic conditions or any incidents ahead in the tunnel.

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Traffic Message Signboards tell you about traffic conditions or any incidents ahead in tunnel.

Fire Hose, Extinguisher and Emergency SOS Phones

You can find fire hose and extinguishers in fire service cabinets every 50 metres next to the slow lane inside all our road tunnels.  Inside these cabinets, you can find:

  • A fire hose reel
  • Fire extinguishers
  • A fire break-glass panel which can be activated to sound an alarm
  • Emergency SOS phones located every 100 metres inside alternate fire service cabinets. They connect directly to the LTA Operations Control Centre and can be used to call for help.
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Fire service cabinets located every 50 metres in tunnel, next to the slow lane. Emergency SOS phones can be found every 100 metres, in alternate fire service cabinets.

Emergency Flashing Lights

When you see flashing lights on the wall or above the emergency door, tune in to any local radio station to listen for LTA’s emergency announcements or instructions.

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Emergency flashing lights in tunnel

Local Radio Announcements

During an emergency, safety announcements will be played over local radio stations.  Tune in to any local radio station to hear these announcements.  If you are on a motorcycle and do not have radio, you can check with a motor vehicle near you.

Emergency Exits

If you have to evacuate the tunnel on foot:

  • For Woodsville Tunnel and Fort Canning Tunnel, head for the tunnel’s entrance, away from the incident or smoke.
  • For CTE, KPE, MCE tunnels and Sentosa Gateway Tunnel, head for the nearest

            o   Emergency escape staircase, which is located every 500 metres in the tunnel next to the slow lane. The stairs lead to street level; or

            o   Pedestrian cross passage door, which is located every 100 metres in the CTE, KPE and MCE tunnels next to the fast lane. Doors lead to the opposite bound tunnel.

 

For CTE Tunnel, escape staircases and pedestrian cross passage doors are identified by red-and-white stripes and flashing orange lights.

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Escape staircase (every 500 metres, next to slow lane)
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Pedestrian cross passage door (every 100 metres, next to fast lane)

 

For KPE, MCE and Sentosa Gateway Tunnel, escape staircases and pedestrian cross passage doors (KPE and MCE) are identified by green panels and flashing bluish-white lights.

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Escape staircase (every 500 metres, next to slow lane)
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Pedestrian cross passage door (every 100 metres, next to fast lane)

What to Do in an Emergency

If your vehicle has broken down:

1.      Stop your vehicle at the road shoulder where possible

2.      Switch on your vehicle hazard lights

3.      Use the nearest emergency SOS phone (every 100 metres, next to slow lane) to call for help from the LTA Operations Control Centre or dial 1800-CALL LTA (1800-2255 582) for assistance

4.      LTA vehicle recovery team will arrive at the incident site to tow your vehicle to the nearest designated car park. 

For your safety,

  • Move to and stay on the raised platform on the road shoulder, downstream of the vehicle
  • Be aware of oncoming traffic at all times
  • Do not attempt to repair your vehicle in the tunnel
  • As it is unsafe to remain in the tunnel, for your safety, you may be guided to leave the tunnel through the nearest escape staircase.
  • If it is unsafe to leave your vehicle, or you are unable to get your vehicle to the road shoulder, stay in your vehicle and call for assistance

When calling 1800-CALL LTA (1800-2255 582) for help, please provide your location in the tunnel and direction of travel. Look out for nearby:

  • Kilometre marker on the raised platform
  • Slip road
  • Emergency exit door label

If your vehicle is involved in a collision inside the tunnel:

1.      Drive out of the tunnel if there is no injury to attend to

2.      If there is an injury, or if your vehicle has stalled, use the nearest emergency SOS phone (every 100 metres, next to slow lane) to call for help from the LTA Operation Control Centre or dial 1800-CALL LTA (1800-2255 582) for assistance

3.      LTA, SCDF and Traffic Police response teams will arrive at the incident site to assist you

 

If your vehicle is on fire or emitting smoke:

1.      Stop your vehicle at the road shoulder and switch-off the engine

2.      Use the portable fire extinguisher inside the fire service cabinet located at 50-metre intervals inside the tunnel

3.      Use the nearest emergency SOS phone (every 100 metres, next to slow lane) to call for help from the LTA Operation Control Centre or dial 1800-CALL LTA (1800-2255 582) for assistance

4.      Use the fire break-glass panel at the fire service cabinet to sound an alarm

5.      Do not be alarmed if the overhead water sprinkler system is activated in the MCE, Woodsville or Sentosa Gateway Tunnel

6.      LTA, SCDF and Traffic Police response teams will arrive at the incident site to assist you

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Fire service cabinets located every 50 metres in tunnel, next to slow lane. Emergency SOS phones can be found every 100 metres, in alternate fire service cabinets.

If you are approaching an incident or accident site:

1.      Follow lane use signs above the lanes in tunnels

2.      Avoid lanes with a Red Cross (X) above. Proceed to drive past the incident site by following the Green Arrow Lane Use Sign above lanes that are passable.

3.      Stop your vehicle when all Lane Use Signs show Red Cross (X) above the lanes

4.      Follow advisories on traffic message signboards

5.      Follow directions of police officers or marshals managing the incident

 

How do I know when there is an emergency in the tunnel?

If you:

  • Hear the fire alarm and see flashing lights in the tunnel
  • Hear PA announcements in the tunnel
  • See red crosses “X” on lane use signs above all lanes

Tune in to any local radio station for LTA’s emergency announcements.

 

If you are inside the tunnel when an emergency occurs:

1.  Drive out immediately via the nearest exit where possible

2.  Stay vigilant and look out for lane use signs above the lanes

  • Lanes marked with red cross “X” – avoid the lane
  • All lanes marked with red cross “X” – do not proceed any further

3.  Tune in to any local radio station for LTA’s emergency announcements

4.  If instructed to evacuate and you cannot drive further, turn off your engine, leave your vehicle and go by foot to the nearest emergency exit

  • Woodsville Tunnel and Fort Canning Tunnel – head for the tunnel entrance, away from the incident or smoke
  • CTE, KPE, MCE tunnels and Sentosa Gateway Tunnel – head for the nearest emergency exit which will have flashing lights:

            o   Emergency escape staircase, which is located every 500 metres in the tunnel next to the slow lane. The stairs lead to street level.

            o   Pedestrian cross passage door, which is located every 100 metres in the CTE, KPE and MCE tunnels next to the fast lane. Doors lead to the opposite bound tunnel.

5.  Do not reverse your vehicle

6.  Do not be alarmed if the overhead water sprinkler system is activated in the MCE, WVT and SGT tunnels

7.  Follow directions of police officers or marshals managing the incident

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Do not proceed further if all red crosses light up on the lane use signs

 

For CTE Tunnel, escape staircases and pedestrian cross passage doors are identified by red-and-white stripes and flashing orange lights.

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Escape staircase (every 500 metres, next to slow lane)
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Pedestrian cross passage door (every 100 metres, next to fast lane)

 

For KPE, MCE and Sentosa Gateway Tunnel, escape staircases and pedestrian cross passage doors (KPE and MCE) are identified by green panels and flashing bluish-white lights.

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Escape staircase (every 500 metres, next to slow lane)
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Pedestrian cross passage door (every 100 metres, next to fast lane)

 

If you are approaching the tunnel and there is an emergency,

  • Do not enter the tunnel
  • Look out for the lane use signs. Do not proceed further if all red crosses light up on the lane use signs
  • Look out for the messages displayed on the traffic message signboards
  • Take an alternative route
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Look out for messages displayed on the traffic message signboards and lane use signs

Related Information

Last Updated: 21 September 2017

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