What are roundabouts? A transportation engineer explains the safety benefits of these circular intersections

If you’ve been driving through U.S. cities and towns, you’ve likely noticed an increase in roundabouts replacing traditional four-way intersections. Some drivers embrace them as an efficient traffic solution, while others find them confusing or even intimidating.

But what exactly is a roundabout, and why is it becoming a preferred alternative to stop signs and traffic signals? Roundabouts are not just about traffic flow—they are a safer, more efficient, and environmentally friendly way to design roads.

Let’s break down what roundabouts are, how they work, and why they are considered one of the most effective traffic management solutions today.

What is a Roundabout? Understanding the Basics

roundabout—also known as a rotary or traffic circle—is a circular intersection where vehicles move counterclockwise around a central island. Unlike traditional intersections controlled by stop signs or traffic lights, roundabouts operate using a yield-at-entry system, meaning:

✔ Drivers entering the roundabout must yield to vehicles already circulating.
✔ Traffic flows continuously, reducing congestion and unnecessary stops.
✔ Speeds are naturally reduced, leading to safer driving conditions.

Most roundabouts also include:

🔹 Splitter islands – Raised medians that help slow down traffic before entering.
🔹 Pedestrian crosswalks – Positioned away from the central island to increase safety.
🔹 Lane markings – Clear indicators help guide drivers into the correct exit lane.

The result? A smoother, safer, and more efficient intersection that reduces both traffic delays and accidents.

A Brief History of Roundabouts

Many people assume roundabouts are a modern innovation, but their history dates back hundreds of years.

Video : Roundabout Safety Benefits

  • 1700s – Early versions of circular intersections appeared in Europe, particularly in England and France.
  • 1800s-1900s – Washington, D.C. was designed with multiple traffic circles, inspired by European models.
  • 1950s – The United Kingdom introduced the yield-at-entry rule, transforming roundabouts into the efficient system we use today.
  • 1990s – The first modern roundabout in the U.S. was built in Summerlin, Nevada in 1990.
  • Today – Over 10,000 roundabouts exist in the United States, with more being installed every year.

While roundabouts have been common in Europe and Australia for decades, the U.S. is now rapidly adopting them due to their proven safety and efficiency benefits.

Why Roundabouts Are Safer Than Traditional Intersections

One of the biggest reasons cities are replacing traditional intersections with roundabouts is safety.

1. Fewer Conflict Points = Fewer Accidents

typical four-way intersection has 32 conflict points—areas where vehicle paths cross, increasing the risk of collisions. In contrast, a roundabout reduces conflict points to just 8.

This means:

✔ No head-on collisions
✔ No dangerous T-bone crashes
✔ Fewer high-speed impacts

According to the Federal Highway Administration (FHWA), roundabouts can reduce serious and fatal crashes by up to 90% when replacing a stop-controlled intersection. Even when replacing a traffic signal intersection, they reduce serious crashes by nearly 80%.

2. Lower Speeds = Less Severe Collisions

In a roundabout, vehicles enter and exit at lower speeds (15-25 mph), compared to the higher speeds (40-50 mph) seen at traditional intersections.

Lower speeds lead to:

✔ Less severe crashes
✔ Fewer pedestrian injuries
✔ Easier decision-making for drivers

3. Safer for Pedestrians and Cyclists

Roundabouts offer better protection for pedestrians because:

✔ Crosswalks are set back from the circular flow, allowing drivers to see pedestrians clearly.
✔ Pedestrians only cross one direction of traffic at a time, making crossings safer.
✔ Cyclists can either merge into traffic or use a designated bike path, depending on the design.

With these safety features, roundabouts significantly reduce pedestrian-related accidents compared to traditional intersections.

Efficiency: Why Roundabouts Improve Traffic Flow

Beyond safety, roundabouts are also more efficient than stop signs or traffic lights.

1. Less Waiting, More Moving

At a traditional intersection, cars must stop at red lights, even when there’s no cross traffic. In a roundabout:

✔ Traffic keeps moving – No unnecessary stops.
✔ Fewer backups – No long wait times during rush hour.
✔ Reduced driver frustration – No more waiting for a green light when there’s no oncoming traffic.

2. Eliminating Left Turns = Smoother Flow

One of the most dangerous and disruptive movements at an intersection is the left turn. Roundabouts eliminate left turns, forcing all vehicles to move in the same direction, improving:

✔ Traffic efficiency – No waiting for gaps in oncoming traffic.
✔ Driver decision-making – No confusion about when to turn.

3. Roundabouts Handle High Traffic Volumes Better

Unlike stop signs and traffic lights, which cause congestion during peak hours, roundabouts allow continuous movement, making them ideal for high-traffic areas.

Environmental Benefits: How Roundabouts Help the Planet

Roundabouts aren’t just safer and more efficient—they also have environmental advantages.

1. Reduced Fuel Consumption

✔ Less idling at red lights = less wasted fuel
✔ Lower speeds = better fuel efficiency

According to studies, roundabouts can reduce fuel consumption by up to 30%, making them a cost-effective solution for drivers.

2. Lower Carbon Emissions

Fewer stops and starts mean lower emissions, helping reduce air pollution in urban areas. Cities that replace signalized intersections with roundabouts see:

✔ Less smog and pollution
✔ Improved air quality

3. Less Road Maintenance Required

✔ No traffic signals = lower maintenance costs
✔ Roundabouts last longer than traffic lights

With less infrastructure to maintain, roundabouts save cities money in the long run.

Challenges: Why Some Drivers Struggle with Roundabouts

Despite their many benefits, some drivers remain hesitant about roundabouts. Common challenges include:

🚦 Confusion about yielding – Some drivers don’t understand that they must yield to circulating traffic before entering.
🚦 Merging issues – Drivers unfamiliar with roundabouts sometimes hesitate, causing unnecessary slowdowns.
🚦 Exit mistakes – Some drivers find it difficult to choose the correct exit and miss their turn.

However, studies show that once drivers become familiar with roundabouts, their confidence improves significantly.

Video : Principles of Intersection Safety

Final Thoughts: Are Roundabouts the Future of Road Design?

Roundabouts are more than just a traffic trend—they are a safer, smarter, and greener solution for modern transportation. With their ability to reduce crashes, improve traffic flow, and lower emissions, they are quickly becoming a preferred alternative to traditional intersections.

🚗 Safer roads, fewer accidents
🚗 Smoother traffic, less congestion
🚗 Lower fuel costs, reduced pollution

As more states adopt roundabouts in urban and suburban planning, they will likely become a permanent feature of America’s roadways.

So next time you approach a roundabout, embrace the change—it’s making our roads safer and more efficient for everyone!

Devastated After Burying My Wife, I Took My Son on Vacation – My Blood Ran Cold When He Said, ‘Dad, Look, Mom’s Back!’

Imagine burying a loved one, only to see them alive again. When my son spotted his “dead” mother on our beach vacation, I couldn’t believe my eyes. The truth I uncovered was far more heartbreaking than her death.

I never thought I’d experience grief so young, but here I am at 34, a widower with a 5-year-old son. The last time I saw my wife Stacey two months ago, her chestnut hair smelled of lavender as I kissed her goodbye. Then, a phone call that will forever be etched in my memory shattered my world… 💔

A man holding a smartphone | Source: Unsplash

A man holding a smartphone | Source: Unsplash

I was in Seattle at that time, finalizing a significant deal for my company when my phone buzzed. It was a call from Stacey’s father.

“Abraham, there’s been an accident. Stacey… she’s gone.”

“What? No, that’s impossible. I just talked to her last night!”

“I’m so sorry, son. It happened this morning. A drunk driver…”

An older man holding a phone | Source: Midjourney

An older man holding a phone | Source: Midjourney

His words faded into a dull roar. I don’t remember the flight home, just stumbling into our empty house. Stacey’s parents had already arranged everything. The funeral was over, and I hadn’t been able to say goodbye.

“We didn’t want to wait,” her mother said, avoiding my eyes. “It was better this way.”

I was too numb to argue. I should have fought harder. I should have demanded to see her, to say goodbye. But grief does funny things to your mind. It clouds your judgment and makes you accept things you’d normally question.

A grieving man in a cemetery | Source: Pexels

A grieving man in a cemetery | Source: Pexels

That night, after the funeral, I held Luke as he cried himself to sleep.

“When’s Mommy coming home?”

“She can’t, buddy. But she loves you very much.”

“Can we call her? Will she talk to us, Daddy?”

“No, baby. Mommy’s in heaven now. She can’t talk to us anymore.”

He buried his face in my chest as I held him tight, my tears falling silently. How could I explain death to a five-year-old when I could barely understand it myself?

A teary-eyed little boy in bed | Source: Midjourney

A teary-eyed little boy in bed | Source: Midjourney

Two months crawled by.

I threw myself into work and hired a nanny for Luke. But the house felt like a mausoleum. Stacey’s clothes still hung in the closet and her favorite mug sat unwashed by the sink. Every corner held a memory, and those memories were slowly haunting me.

One morning, as I watched Luke push his cereal around his bowl, barely eating, I knew we needed a change.

“Hey champ, how about we go to the beach?” I asked, trying to inject some enthusiasm into my voice.

A woman's clothes hung in a closet | Source: Unsplash

A woman’s clothes hung in a closet | Source: Unsplash

His eyes lit up for the first time in weeks. “Can we build sandcastles?”

“You bet! And maybe we’ll see some dolphins.”

I felt a glimmer of hope. Maybe this trip was what we both needed to start healing.

We checked into a beachfront hotel, our days filled with sun and surf. I watched Luke splash in the waves, his laughter a soothing melody to my weary soul. I almost forgot the pain and lost myself in the simple joy of being a dad.

A little boy standing on the beach and holding a ball | Source: Midjourney

A little boy standing on the beach and holding a ball | Source: Midjourney

On our third day, I was lost in thought when Luke came running.

“Daddy! Daddy!” he shouted. I smiled, thinking he wanted more ice cream.

“Dad, look, Mom’s back!” he said, pointing at someone.

I froze, following his gaze. A woman stood by the beach, her back to us. Same height as Stacey with the same chestnut hair. My heart pounded so hard I could feel it in my throat.

A woman standing on the beach | Source: Unsplash

A woman standing on the beach | Source: Unsplash

“Luke, buddy, that’s not—”

The woman turned slowly. And my stomach dropped the moment our eyes met.

“Daddy, why does Mommy look different?” Luke’s innocent voice cut through my shock.

I couldn’t speak. My eyes were fixed on the horror about thirty yards away, laughing.

It was Stacey.

Her eyes widened as she grabbed the arm of a man next to her. They hurried away, disappearing into the crowd of beach-goers.

A startled woman | Source: Midjourney

A startled woman | Source: Midjourney

“Mommy!” Luke cried, but I scooped him up.

“We need to go, buddy.”

“But Dad, it’s Mom! Didn’t you see her? Why didn’t she come say hi?”

I carried him back to our room, my mind reeling. It couldn’t be. I’d buried her. Hadn’t I? But I knew what I saw. That was Stacey. My wife. Luke’s mother. The woman I thought was dead.

A little boy crying | Source: Pexels

A little boy crying | Source: Pexels

That night, after Luke fell asleep, I paced the balcony. My hands shook as I dialed Stacey’s mother.

“Hello?” she answered.

“I need to know exactly what happened to Stacey.”

Silence, then, “We’ve been through this, Abraham.”

“No, tell me again.”

A man holding a phone | Source: Midjourney

A man holding a phone | Source: Midjourney

“The accident was early morning. It was too late by the time we reached the hospital.”

“And the body? Why couldn’t I see her?”

“It was too damaged. We thought it best—”

“You thought wrong,” I snapped, hanging up.

I stood there, staring out at the dark ocean. Something wasn’t right. I could feel it in my gut. And I was going to get to the bottom of it.

A senior woman talking on the phone | Source: Midjourney

A senior woman talking on the phone | Source: Midjourney

The next morning, I took Luke to the kids’ club in the resort along with his nanny. “I’ve got a surprise for you later, champ!” I promised, hating myself for the lie.

I spent hours combing the beach, the shops, and the restaurants. No sign of Stacey or her companion. With each passing hour, my frustration grew. Was I going crazy? Had I imagined the whole thing?

As the sun began to set, I slumped onto a bench, defeated. Suddenly, a familiar voice made me jump.

“I knew you’d look for me.”

Silhouette of a woman near the beach | Source: Unsplash

Silhouette of a woman near the beach | Source: Unsplash

I turned to find Stacey standing there, alone this time. She looked just like I remembered, but somehow different. Harder. Colder.

“How?” It was all I could manage.

“It’s complicated, Abraham.”

“Then explain it,” I snarled, my hands shaking with anger and shock as I secretly captured her conversation on my phone.

A sad woman with her eyes downcast | Source: Midjourney

A sad woman with her eyes downcast | Source: Midjourney

“I never meant for you to find out like this. I’m pregnant.”

“What?”

“It’s not yours,” she whispered, not meeting my eyes.

The story slowly spilled out. An affair. A pregnancy. An elaborate plan to escape.

“My parents helped me,” Stacey admitted. “We knew you’d be away. The timing was perfect.”

“Perfect?” Do you have any idea what you’ve done to Luke? To me?”

Close-up of a furious man frowning | Source: Midjourney

Close-up of a furious man frowning | Source: Midjourney

Tears streamed down her face. “I’m sorry. I couldn’t face you. This way, everyone could move on.”

“Move on? I thought you were DEAD! Do you know what it’s like to tell your five-year-old son his mother is never coming home?”

“Abraham, please try to understand—”

“Understand what? That you’re a liar? A cheater? That you let me grieve while you ran off with your lover?”

Close-up of a distressed woman | Source: Midjourney

Close-up of a distressed woman | Source: Midjourney

“Keep your voice down,” she hissed, glancing around nervously.

I stood, towering over her. “No. You don’t get to call the shots anymore. You lost that right when you decided to play dead.”

As Stacey opened her mouth to respond, a small voice cut through, stopping me cold.

“Mommy?”

We both turned. Luke stood there, his eyes wide, clutching his nanny’s hand. My heart sank. How much had he heard?

A sad little boy crying | Source: Pexels

A sad little boy crying | Source: Pexels

Stacey’s face went white. “Luke, honey—”

I scooped him up, backing away. “Don’t you dare speak to him.”

The nanny looked confused, her eyes darting between Stacey and me. “Sir, I’m so sorry. He ran off when he saw you.”

“It’s okay, Sarah. We’re leaving.”

Luke squirmed in my arms. “Daddy, I want to go to Mommy… please. Mommy, don’t leave me. Mommy… Mommy!”

Close-up of a startled woman's eyes | Source: Midjourney

Close-up of a startled woman’s eyes | Source: Midjourney

I carried him away, ignoring his tearful pleas. In our room, I packed frantically while Luke peppered me with questions.

“Why are you crying, Daddy? Why can’t we go to Mommy?”

I knelt before him, taking his small hands in mine. How could I explain this? How do you tell a child that his mother chose to abandon him?

A teary-eyed little boy looking up | Source: Pixabay

A teary-eyed little boy looking up | Source: Pixabay

“Luke, I need you to be brave. Your mother did a very bad thing. She lied to us.”

His lower lip trembled. “She doesn’t love us anymore?”

The innocent question shattered what was left of my heart. I pulled him close, unable to hold back my tears. “I love you enough for both of us, buddy. Always. No matter what happens, you’ll always have me, okay?”

His tiny head nestled against my chest, a small nod followed by a deep sleep. His tears soaked through my shirt, leaving a damp, salty reminder of our shared grief.

A sad little boy looking out the window | Source: Freepik

A sad little boy looking out the window | Source: Freepik

The next few weeks were a blur. Lawyers, custody arrangements, and explaining to Luke in terms a 5-year-old could understand. Stacey’s parents tried to reach out, but I shut them down. They were as much to blame as she was.

One month later, I sat in my lawyer’s office and signed the final papers.

“Full custody and generous alimony,” she said. “Given the circumstances, Mrs. Stacey didn’t contest anything.”

I nodded, numb. “And the gag order?”

“In place. She can’t discuss the deception publicly without severe penalties.”

A lawyer in her office | Source: Pexels

A lawyer in her office | Source: Pexels

As I stood to leave, my lawyer touched my arm. “Abraham, off the record, I’ve never seen a case like this. How are you holding up?”

I thought of Luke, waiting at home with my parents, the only ones he could trust now. “One day at a time!” I said.

In the eyes of the law, I was no longer a widower. But in my heart, the woman I married was gone forever, leaving behind only a ghost of broken promises and shattered trust.

Grayscale of an emotional man | Source: Pixabay

Grayscale of an emotional man | Source: Pixabay

Two months later, I stood on our new balcony, watching Luke play in the backyard. We’d moved to a different city, a fresh start for both of us. It hadn’t been easy. Luke still had nightmares and still asked about his mom. But slowly, we were healing.

One day, my phone buzzed with a text from Stacey.

“Please, let me explain. I miss Luke so much. I’m feeling so lost. My boyfriend broke up with me. 😔🙏🏻

I deleted it without responding. Some bridges, once burned, can never be rebuilt. She’d made her choice, and now she had to live with it.

Close-up of a man holding a phone | Source: Unsplash

Close-up of a man holding a phone | Source: Unsplash

As the sun set on another day, I hugged my son tight. “I love you, buddy,” I whispered.

He grinned up at me, his eyes shining with trust and love. “I love you too, Daddy!”

And in that moment, I knew we were going to be okay. It wouldn’t be easy, and there would be tough days ahead. But we had each other, and that’s what mattered most.

A father and child holding hands | Source: Pexels

A father and child holding hands | Source: Pexels

This work is inspired by real events and people, but it has been fictionalized for creative purposes. Names, characters, and details have been changed to protect privacy and enhance the narrative. Any resemblance to actual persons, living or dead, or actual events is purely coincidental and not intended by the author.

The author and publisher make no claims to the accuracy of events or the portrayal of characters and are not liable for any misinterpretation. This story is provided “as is,” and any opinions expressed are those of the characters and do not reflect the views of the author or publisher.

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