Raised medians reduce left turns which prevents crashes (and saves lives). But cities only block left turns for some businesses and not others. How...
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Traffic travels in both directions. So it makes sense we’d have a malicious moniker for two-way left turn lanes (TWLTLs). Are they actually...
The light turns yellow and you find yourself in a panic. Should I slam on my brakes and risk getting rear-ended? Or should I run the yellow— and...
Getting a red light ticket feels really crummy. When yellow lights (“change intervals”) are set long enough, red light runners vanish...
If we let more people live ¼-mile from the train, everyone saves money. America is not affordable because building lots are not affordable. And there...
All you want to do is get on the freeway. Then a seemingly superfluous traffic signal stops you. Do ramp meters work?
In the 1970s, Arizonans resoundingly voted "NO" to completing Interstate 10 through downtown Phoenix. But that's because I-10 would have been a ten...
Trains are wonderful but too expensive for most cities. A bus operating like a train may help smaller places afford quality mass transit.
How does a traffic signal knows when to turn green? Especially late at night when you are the only driver on the road. In this video, I chat with two...
Western America has not built a single mile of new Interstate constructed since 1980. Here's how Las Vegas and Phoenix teamed up build one which they...
Good riddance to those unsafe little buildings which sit in the middle of high-speed roadways. But without a "cash lane," how are you supposed to pay...
Ever freak out how a big earthquake could drop a bridge right on top of you? I talk with a seismic engineer about the six cool secrets they use to...
Thirty years ago a major earthquake destroyed a double-decker freeway, leaving 42 people dead. Here's the sad history and the lessons engineers have...
Everything is bigger in Texas, including the roads. In the rush to accomodate its swelling population, it may be creating a traffic disaster for the...
Signs used to look different at night. Here's why.
Here’s the real reason why Caltrans is removing Botts Dots (turtles) from the state’s hundreds of miles of freeway (Hint: It has...
It’s called a ‘Continuous Flow Intersection.’ I take a quick look at traffic signal engineering and how this new type of displaced...
Traffic signals are not scary. Roundabouts can be, especially if you’ve never driven one before. Let’s take a fun dive into...
Marty McFly would struggle to find a safe to skateboard to the Twin Pines Mall. What this tells us about pedestrian safety in the real world.
Why you should stop fighting the speeders and start blaming the roadway itself.