Roundabouts, Junctions, and Right of Way: A Practical Reference

Why Right-of-Way Rules Matter

Right-of-way rules exist to create predictable order at intersections, where conflicting traffic paths create the highest collision risk in everyday driving. The Federal Highway Administration consistently identifies intersections as a leading location for crashes on US roads. Yet many drivers operate on instinct rather than a clear understanding of the underlying rules — especially when junction types vary.

This reference breaks down who yields at the most common junction and intersection types found on US roads. Whether you're approaching a roundabout, a four-way stop, or a T-junction, the rules below give you a reliable framework to apply in real time. For a broader look at how urban road environments create distinct hazards, see how urban and motorway risk profiles differ.

Junction Type by Junction Type: Who Yields

Roundabouts

At a roundabout, entering traffic always yields to circulating traffic. Drivers already inside the roundabout have right of way. You must wait at the yield line — not the edge of the roadway — until a safe gap exists in the circulating lane or lanes. Do not stop inside the roundabout unless forced to; maintain a steady, slow speed through the circle.

In multi-lane roundabouts, choose your lane before you enter based on your exit: generally, right-lane exits use the right lane, while left-lane exits or going more than halfway around use the left lane. Signal when exiting.

Four-Way Stops

When four vehicles arrive simultaneously, yield to the driver on your right. In practice, the driver who arrived first proceeds first. If two vehicles arrived at the same time and are across from each other, a driver going straight has priority over a driver turning left. When in doubt, make eye contact and use a hand signal to establish a shared understanding.

T-Junctions

At a T-junction, the driver on the minor road (the stem of the T) yields to all traffic on the through road (the top of the T). This applies whether you intend to turn left or right onto the main road. A stop sign or yield sign at the junction reinforces this obligation legally.

Uncontrolled Intersections

Where no signs or signals exist, the general US rule is yield to the vehicle on your right. Treat these intersections with extra caution: slow to a speed at which you can stop if necessary. Uncontrolled intersections are most common in rural areas and older residential grids.

Left Turns Across Oncoming Traffic

A left-turning driver must yield to all oncoming traffic travelling straight or turning right, regardless of junction type. This rule applies at signalized intersections, roundabouts, and driveways alike. A green light does not grant automatic right of way for a left turn — it only permits you to enter the intersection and wait for a legal gap. This is one of the most commonly misunderstood right-of-way situations. See common lane and merging errors for related yielding missteps on faster roads.

Practical Tips for Every Junction

Knowing the rule is only part of safe junction navigation. Here's how to apply that knowledge consistently:

• Approach speed matters. Slow before the yield or stop line, not at it. This gives you time to assess traffic without creating a sudden stop hazard behind you.
• Scan all directions twice. A single glance misses cyclists, pedestrians, and vehicles in blind spots. At roundabouts, look left; at four-way stops, check all four legs.
• Never assume the other driver knows the rule. Even when you have right of way, proceed only when it's safe. Right of way is a legal concept; it doesn't prevent a crash if the other driver is inattentive.
• Pedestrians typically have priority. At marked crosswalks, pedestrians generally have the right of way over turning vehicles regardless of junction type. State laws vary slightly, but yielding to pedestrians in or entering a crosswalk is a near-universal US standard.
• Emergency vehicles always supersede right of way. Pull to the right and stop whenever an emergency vehicle approaches with lights and sirens active, regardless of who technically has right of way at that moment.

Before you even reach a junction, your vehicle condition affects how safely you can respond. A well-maintained braking system and clear sightlines from your mirrors and windows make every junction interaction safer. A pre-drive safety walkthrough can help you build that habit.