3.2 Roundabouts Rules & Techniques

3.2 Roundabouts Rules & Techniques

Roundabouts are a defining feature of the Abu Dhabi road network. They are designed to improve safety and maintain traffic flow at busy intersections without the need for signal stops. However, they require strict lane discipline, precise signaling, and an understanding of yielding rules. The basic rule of roundabouts in the UAE is that vehicles inside the roundabout always have priority.

Yielding Rules on Entry

When approaching a roundabout, you will encounter a GIVE WAY sign and dashed yield lines. You must:

• Slow down and look to your left.
• Yield to all vehicles already circulating inside the roundabout.
• Stop if there is no safe gap in the traffic approaching from the left.
• Enter only when you can do so without forcing circulating vehicles to brake or swerve.

Roundabout Types in Abu Dhabi

Abu Dhabi features several types of roundabouts designed for different traffic volumes:

1. Mini-Roundabouts (Single Lane): Found in residential or quiet suburban areas. They have a single lane for entry, circulation, and exit. Speed limits are low (typically 20-30 km/h).
2. Multi-Lane Roundabouts (Two-Lane or Three-Lane): Found on major arterial roads and commercial districts. These require careful lane selection before entry and strict lane keeping inside the circle.
3. Signalized Roundabouts: Large intersections where traffic flow is controlled by traffic lights positioned at the entry points and inside the central island.

Lane Selection Rules

In Abu Dhabi, you must select your lane before entering the roundabout based on the exit you intend to take. Lane discipline must be maintained throughout the entire maneuver; changing lanes inside the roundabout is highly dangerous and illegal.

Two-Lane Roundabouts

The lane selection for a standard two-lane roundabout is as follows:

• Right Lane (Outer Lane): Use this lane if you are turning right (first exit) or going straight (second exit). You must enter the roundabout from the right lane and remain in the outer lane.
• Left Lane (Inner Lane): Use this lane if you are going straight (second exit), turning left (third exit), or making a U-turn (fourth exit). You must enter the roundabout from the left lane and circulate in the inner lane.

Note on Going Straight: Since you can go straight from either lane, if you enter from the right lane, you must exit into the right lane of the receiving road. If you enter from the left lane, you must exit into the left lane of the receiving road.

Three-Lane Roundabouts

In larger, three-lane roundabouts, the rules are refined:

• Right Lane: Designated for turning right or going straight.
• Middle Lane: Designated exclusively for going straight.
• Left Lane: Designated for turning left or making a U-turn.

Roundabout Lane Selection Matrix

Signaling Rules: Entering and Exiting

Proper signaling is essential to communicate your intentions to other drivers. The signaling rules in Abu Dhabi are specific to the direction you are traveling:

1. Turning Right (1st Exit):
   • Activate your right indicator on approach.
   • Maintain the right indicator while entering and circulating.
   • Turn off the indicator after exiting.
2. Going Straight (2nd Exit):
   • Do not signal on approach or when entering the roundabout.
   • As you pass the first exit, activate your right indicator to signal your intention to leave at the second exit.
   • Maintain the right indicator until you have exited.
3. Turning Left (3rd Exit) or U-Turn (4th Exit):
   • Activate your left indicator on approach.
   • Maintain the left indicator while circulating in the inner lane.
   • Immediately after passing the exit before your intended exit (the second exit for a left turn, or the third exit for a U-turn), switch to your right indicator to signal your exit.
   • Maintain the right indicator until you clear the roundabout.

The golden rule of roundabout signaling is: Always signal right before exiting. This alerts drivers waiting to enter that you are vacating the space, allowing them to enter safely.

Managing Blind Spots and Exiting

Due to the curved geometry of a roundabout, blind spots are significantly altered. When circulating in the inner (left) lane and preparing to exit:

• You must check your central and right mirrors.
• You must perform a quick shoulder check (the 'lifesaver glance') to the right to ensure no vehicle in the outer lane is continuing around the roundabout.
• Ensure your exit path is clear before crossing the outer lane to leave the roundabout.

Emergency Vehicles inside Roundabouts

If you are circulating inside a roundabout and hear or see an emergency vehicle (ambulance, police, civil defense) approaching with sirens active:

• Do not stop inside the roundabout. Stopping inside blocks traffic and creates gridlock.
• Continue circulating to your planned exit, exit the roundabout safely, and then pull over to the right side of the road to allow the emergency vehicle to pass.

Signalized Roundabouts

Some extremely large roundabouts in Abu Dhabi, Al Ain, and other areas of the Emirate are controlled by traffic lights located at each entry point and within the roundabout itself.

At a signalized roundabout:

• The standard yield rules are suspended.
• You must obey the traffic lights.
• When your light is red, you must stop at the stop line, even if the roundabout is empty.
• When the light turns green, you may proceed, but you must still maintain strict lane discipline.
• Do not block the roundabout if traffic is backed up.

Safety Tips for Roundabouts

• Observe Large Vehicles: Buses and heavy trucks require more space and may need to swing wide or occupy two lanes. Give them plenty of room and never attempt to overtake them inside a roundabout.
• Maintain Low Speed: Keep your speed between 30 km/h and 40 km/h to ensure you can react to sudden stops or lane-cutting.
• Watch for Pedestrians: Many roundabouts have pedestrian crossings at their exits. Be prepared to yield as you exit.