How to drive safely in roundabouts: priority rules and safe traffic flow

Roundabouts can pose a challenge for many drivers, from beginners to experienced ones facing complex layouts. As these intersections become more common in Romanian cities, understanding the correct rules of the road is essential for safety and for smoother urban mobility.

Roundabouts aren’t just simple circular intersections — they require a specific approach, with clear right-of-way rules and driving techniques tailored to them. Following these principles not only protects you and other road users but also contributes to the overall efficiency of urban traffic.

Why roundabouts are implemented in urban traffic?

Roundabouts are implemented based on feasibility studies that analyze traffic at problematic intersections. These studies assess vehicle volumes, accident frequency, and waiting times to determine whether a roundabout would improve the situation.

Main advantages of roundabouts:

• They streamline traffic by eliminating signals and dead waiting times
• They require drivers to reduce speed, significantly lowering the number and severity of road traffic crashes
• They improve safety by eliminating frontal collisions and reducing conflict points
• They reduce fuel consumption by eliminating the need for full stops at lights
• They reduce pollutant emissions by shortening idling time
• They diminish wear on vehicles by avoiding frequent start-stop cycles
• They allow continuous flow of traffic even in case of technical failures (unlike signals)

Types of roundabouts and their characteristics

Single-lane roundabout

The simplest configuration, where all vehicles travel on the same lane regardless of the exit desired. The rules are straightforward: enter when it is safe and exit at your chosen destination.

Multi-lane roundabouts

More complex, with 2-4 circulating lanes, each with specific rules. Road markings and signboards indicate which exits are permitted from each lane.

Roundabouts with complex geometry

Appear at major intersections with multiple access roads. They may have dedicated lanes for certain directions or irregular configurations that require extra attention.

Mini-roundabouts

Used in tight spaces, with a small central island, where large vehicles can pass around the central island.

Also read

Drivers with 3 Years’ Experience Could Become Auto Examiners

A new proposed law aims to allow drivers with a minimum of 3 years of experience to become auto examiners for the practi...

3. Proper entry technique

Steps for a safe entry:

1. Reduce speed to 20-30 km/h as you approach
2. Evaluate traffic inside the roundabout through successive left-right glances
3. Yield to all vehicles circulating
4. Check your blind spot for motorcycles and bicycles
5. Accelerate progressively to merge with the traffic flow

Common mistakes at entry:

• Forcing entry when there isn’t enough space
• Stopping completely when it isn’t necessary (blocks traffic)
• Not respecting the priority of vehicles inside the roundabout

4. Driving inside the roundabout

Rules for safe movement:

• Maintain a steady speed of 25-35 km/h
• Avoid lane changes unless absolutely necessary
• Keep a safe following distance – minimum 3 seconds
• Pay attention to vehicles entering (they must yield, but be defensive)
• Prepare for exit in advance with signaling and positioning

5. Exiting the roundabout correctly

Sequence for a safe exit:

Also read

Driving with a slim spare wheel: a complete safety guide

The slim spare wheel is a temporary solution designed to help you reach the nearest service center safely. Unlike a conv...

1. Signal right 50-70 meters before the exit
2. Check mirrors and blind spots for cyclists/motorcyclists
3. Position your vehicle toward the outer edge of the lane
4. Yield to pedestrians on crosswalks
5. Exit with moderate speed to avoid startling pedestrians

Special situations and problem-solving

When you have entered on the wrong lane

Safe solution:

1. Do not force a lane change – it is extremely dangerous
2. Continue circulating and perform an additional round if necessary
3. Re-plan your route for the correct exit
4. If a lane change is unavoidable: signal clearly, check 2-3 times, and yield to all vehicles

Driving in difficult weather conditions

Required adaptations:

• Reduce speed by 30-40% compared to normal conditions
• Increase safety distances to at least 4-5 seconds
• Avoid abrupt maneuvers that can cause skidding
• Use lights for optimal visibility
• Anticipate unpredictable behavior from other drivers

Roundabouts in very heavy traffic

Strategies to improve flow:

• Stay patient and do not force entry
• Leave space for vehicles exiting the roundabout
• Avoid entering if you cannot exit completely
• Cooperate with other drivers to maintain flow

Common mistakes and how to avoid them

1. Entering without yielding

Cause: Haste or inattention Solution: Always assess traffic and wait for a safe gap

2. Incorrect signaling

Cause: Misunderstanding signaling rules Solution: Signal only when exiting (with specific exceptions)

3. Excessive speed in the roundabout

Cause: Overconfidence or failing to adapt to road conditions Solution: Follow recommended speeds and adapt to visibility

4. Unplanned lane changes

Cause: Late or incorrect lane positioning Solution: Plan your route in advance and accept additional rotations

Specific tips for driver categories

For beginner drivers

• Practice on simple roundabouts before tackling complex ones
• Use GPS apps to study the route in advance
• Drive defensively – yield even when you have priority
• Don’t panic at mistakes – find safe solutions

For experienced drivers

• Be patient with beginner drivers
• Adapt to new or modified configurations
• Stay vigilant – experience can lead to complacency

For drivers of large vehicles

• Plan the space needed for maneuvers in advance
• Use the full width of the lane when necessary
• Signal clearly and early to warn smaller vehicles