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!

Mother of the Groom Hires an Unknown Actress to Sabotage the Wedding, but Plans Spiral Out of Control – Story of the Day

A struggling actress takes an unusual job after being hired by a wealthy man’s mother to pose as his girlfriend and sabotage his upcoming wedding. But as she spends more time with him and his fiancée, she questions her actions and the price of her desperation. What will she choose?

Miranda stepped out of the dim audition room, her chest heavy with frustration. The casting director’s parting words, “You’re not interesting enough,” stung more than she wanted to admit.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

With her wallet almost empty, taking a taxi home wasn’t an option, so she trudged along the busy sidewalk, her thoughts clouded with doubt and discouragement.

As she neared a small corner store, a bulletin board tacked outside caught her eye. Among the cluttered ads and flyers, one stood out.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

She stepped closer to read the hastily written note: “Looking for a woman to pretend to be my son’s girlfriend. Will pay well.” Beneath the bold letters was a single phone number. No name, no explanation.

Miranda shook her head and chuckled to herself. “People are wild,” she muttered, brushing it off as she entered the store.

At the register, reality hit her hard. The little she could afford—pasta, cheese, and toilet paper—barely filled a small bag.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

The notice snagged her attention again as she was heading back. Staring at her meager groceries, she sighed, pulled out her phone, and dialed the number.

“Hello, I saw your ad—” Miranda began, gripping her phone tightly.

A sharp voice cut her off. “Meet me at 7:00 p.m. at Bella Luna. Dinner’s on me.”

Miranda blinked in surprise. “Wait, what—”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

The line went dead. She stared at her phone. No name. No details. Just instructions. It felt strange, but with her bills piling up, she didn’t have the luxury to ignore it.

At 7:00 p.m., Miranda entered the restaurant, her stomach fluttering. She scanned the room, unsure who she was meeting.

A middle-aged woman in a tailored suit approached her, her steps confident.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“Are you the one who called about the ad?” the woman asked, her tone brisk.

“Yes, I’m Miranda,” she replied, offering a polite smile.

“Leslie,” the woman said, gesturing toward a nearby table. “Follow me.”

Once seated, Leslie leaned forward. “Do you have experience with this sort of thing?”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Miranda hesitated. “Not exactly. I’ve never pretended to be someone’s girlfriend before,” she admitted. “But I’m an actress. I think I can do it.”

Leslie nodded, her expression unreadable. “Good enough,” she said. “Here’s the deal. My son is getting married in a month. I need you to make him fall for you and ruin the wedding.”

Miranda’s jaw dropped. “Excuse me? Your ad said to pretend to be his girlfriend. It didn’t say anything about ruining relationships.”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“I’m not stupid enough to write that in an ad,” Leslie said, her voice sharp. “His fiancée isn’t good enough for him. She’s only after his money. You’d be helping him, really.”

Miranda pushed her chair back. “I can’t do this. I’m sorry,” she said, preparing to leave.

“Ten thousand,” Leslie said suddenly.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“What?” Miranda froze.

“Ten thousand dollars if you break up the wedding. Two thousand if you try but fail. That should motivate you,” Leslie explained, her eyes fixed on Miranda.

Miranda’s breath caught. Ten thousand dollars. Two thousand, even. Her landlord’s threats echoed in her head. She needed the money.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“Honey, I don’t have all day,” Leslie snapped.

Miranda swallowed hard. “Fine. I’ll do it.”

“Good. But don’t slack off. If you do, you get nothing,” Leslie warned, extending her hand.

With a deep sigh, Miranda shook it.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Leslie had it all mapped out, and Miranda followed the plan step by step. Leslie’s son, Jack, was hiring an assistant for his company, so Leslie helped Miranda put together an impressive résumé.

It was polished to perfection, making Miranda seem like the ideal candidate. Jack didn’t hesitate—she got the job almost immediately.

But getting the job was the easy part. The hard part was getting Jack to notice her.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Miranda tried everything Leslie suggested. She wore short skirts and fitted blouses, hoping to catch his eye.

Yet, Jack seemed uninterested. His focus was always on work.

Frustrated, Miranda decided to try something different. She began staying late at the office, waiting for moments when it was just the two of them.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

One evening, Jack looked up from his desk and frowned. “You don’t have to stay just because I’m still here,” he said, his tone gentle but firm.

Miranda forced a smile. “I enjoy your company,” she replied, sitting across from him and pretending to organize files.

Over the next two weeks, something shifted. Jack began having longer conversations with Miranda, talking about his life, his goals, and even his favorite movies.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Yet, the more time Miranda spent with Jack, the harder her task became. She had met Katie, his fiancée, the woman Leslie despised.

Katie wasn’t what Miranda expected. She was kind, thoughtful, and genuinely sweet.

She brought homemade cookies to the office, reminded Jack to eat, and calmed him with a soothing word when he was stressed.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

One day, Miranda watched as Katie laughed over an origami crane Jack had made for her.

The love between them was undeniable. Leslie’s claims about Katie being a gold-digger felt harder to believe.

Still, Miranda couldn’t back out. Her landlord had already warned her about overdue rent, and the clock was ticking. Desperation outweighed her growing guilt.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

One evening, as Miranda stayed late at the office with Jack, her phone buzzed. She sighed, seeing Leslie’s name on the screen. Reluctantly, she answered.

“What’s taking so long?” Leslie demanded. “The wedding is in a week, and he’s still with Katie!”

“I’m working on it,” Miranda replied quietly, glancing at Jack, who was seated nearby, engrossed in his laptop.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“There’s no time left. You need to sleep with him,” Leslie snapped.

“What?! We never agreed to that!” Miranda exclaimed, her voice rising slightly.

“Then fake it,” Leslie said coldly. “Make it look like you did and send me photos. I’m done waiting.”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Before Miranda could respond, the line went dead. She stared at the phone, her stomach twisting.

Slowly, she walked back to Jack and sat next to him on the couch, closer than she ever had before.

“Tired?” she asked, her voice softer than usual.

Jack glanced up briefly. “Yeah, a little,” he admitted.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Miranda hesitated, then placed her hand on his arm. “Maybe we could go to a bar. Unwind a little?”

Jack shook his head. “I can’t. Katie made dinner. She’ll already be upset that I’m late.”

“Does it really matter?” Miranda asked, leaning in slightly. “Come on. It’ll be fun.”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Before Jack could respond, the elevator doors opened. Startled, Miranda pulled back. The sound of heels echoed as Katie appeared carrying two lunchboxes.

“I thought I’d bring dinner since you’re working late,” Katie said, smiling. She handed one box to Jack and turned to Miranda. “I brought some for you, too. You shouldn’t go hungry.”

Miranda stared at Katie, her heart sinking. Without thinking, she blurted, “I can’t do this anymore!”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“What are you talking about?” Jack asked, confused.

Miranda took a deep breath. “I’m an actress. I was hired to ruin your wedding. Leslie wanted me to make you fall for me. I needed the money, so I said yes. I’m sorry.”

Jack and Katie listened in stunned silence.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“I’m so sorry,” Miranda said again, her voice breaking. “I’m a horrible person.”

“No, you’re just someone in a desperate situation,” Katie said, taking Miranda’s hand.

Miranda shook her head. “Who are you? I just admitted I was trying to steal your fiancé, and you’re comforting me?”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Katie smiled gently. “I know Jack loves me. You wouldn’t have succeeded.”

Jack frowned with a hard expression. “I don’t want my mom to get away with this. Will you help us?”

“It’s the least I can do,” Miranda agreed.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

They carried out Jack’s plan with careful precision. Fake photos of Miranda and Jack in intimate moments were sent to Leslie.

Her response came quickly—she was excited and praised Miranda, convinced the wedding was ruined.

Meanwhile, Miranda saved screenshots of Leslie’s incriminating messages, knowing they would be crucial.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

At Jack and Katie’s rehearsal dinner, Miranda stood before the gathered guests, her heart pounding.

One by one, the photos, the messages, and even the ad that had first brought her into their lives appeared on the screen.

The room fell silent, then erupted in hushed whispers. Guests exchanged shocked glances, their disbelief palpable.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“This is all lies! I can explain!” Leslie shouted, her face red with anger.

Jack’s expression remained cold as he stepped forward. “Thanks, Mom, but Miranda already explained everything. We know the truth.”

Leslie’s voice rose in desperation. “I only wanted better for you! That woman doesn’t deserve you! She’s not good enough!”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“She’s the best thing that’s ever happened to me,” Jack said firmly. “I’ll never forgive you for trying to ruin that. Now leave. Don’t come back into our lives.”

Leslie’s mouth opened to protest. “But—”

“Leave now,” Jack interrupted, his tone sharp. “Or I’ll call security.”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Leslie’s face twisted in frustration. She grabbed her bag, muttering under her breath, and stormed out, her heels clicking loudly against the floor.

As the room settled, Miranda quietly gathered her things, preparing to slip out unnoticed. Jack noticed and stopped her. “Wait,” he said.

Miranda looked up, hesitant. “What is it?”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

“I spoke to a friend of mine. He has a role in a theater production. You’d be perfect for it,” Jack said.

Her face lit up briefly but quickly fell. “I can’t. I owe you too much already.”

“Stop,” Jack said firmly. “Actors like you are hard to find. You did spend a whole month pretending you enjoyed staying late at the office with me. And you’ll still get your paycheck for this month as my assistant.”

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Miranda shook her head. “I don’t deserve it. I nearly destroyed your lives.”

Katie stepped forward, her voice calm and kind. “If not for you, Leslie would still be trying to ruin our wedding.”

Miranda hesitated. Katie smiled and added, “Stay for dinner. You’re already here. I’ll be upset if you leave.”

Miranda’s eyes filled with gratitude as she hugged Katie tightly. “Thank you,” she whispered.

For illustration purposes only. | Source: Midjourney

For illustration purposes only. | Source: Midjourney

Tell us what you think about this story and share it with your friends. It might inspire them and brighten their day.

If you enjoyed this story, read this one: Sarah’s life has always revolved around her family, but a devastating call from the hospital forced her to confront everything she had put on hold. As she rediscovers herself and begins living on her terms, a surprising twist changes everything, leading her to see life completely differently.

This piece is inspired by stories from the everyday lives of our readers and written by a professional writer. Any resemblance to actual names or locations is purely coincidental. All images are for illustration purposes only. Share your story with us; maybe it will change someone’s life.

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