If you drive in Collin County long enough, you develop a short list of intersections you avoid whenever you can. Maybe it’s the light that always seems to catch you at rush hour, or the left turn where somebody almost clips you every other week. That instinct is not paranoia. It’s pattern recognition, and the crash data usually backs it up.
Plano, McKinney, Allen, and Richardson have all grown faster than their road networks. Frontage roads that were sleepy a decade ago now carry traffic from thousands of new rooftops, two dozen new office campuses, and a steady stream of drivers cutting across town to beat construction. The result is predictable. A handful of intersections in each city show up on crash reports over and over again, and the injuries can be brutal when they happen.
Below is a practical look at the corner-by-corner trouble spots in each city, why they stay dangerous, and what to do if you’re ever the one calling a tow truck from one of them.
Why Collin County Intersections Keep Showing Up on Crash Lists
Most serious intersection wrecks in North Texas come down to the same handful of factors. Heavy left-turn volume across multiple lanes of oncoming traffic. Short yellow-light timing on roads that used to handle less traffic. Drivers staring at their phones while rolling through a protected turn. Add in the sheer number of delivery vans, rideshare cars, and work trucks now running through these cities and you get a lot of metal moving in unpredictable ways.
The crashes that land people in the ER are rarely low-speed fender benders. Side-impact collisions, also called T-bones, tend to happen when someone runs a light or misjudges a gap. Those are the crashes that produce concussions, broken ribs, herniated discs, and worse. If you want to understand why these intersections produce such serious injuries, it helps to read our breakdown of where broadside collisions most commonly occur.
The Most Dangerous Intersections in Plano
Plano runs on a grid, but the grid runs through some of the busiest retail, office, and school corridors in the region. A few intersections consistently generate more crash reports than the rest.
Preston Road and Park Boulevard
If you’ve ever sat through three light cycles here, you already know. Preston and Park sits between major shopping centers, office towers, and residential streets, which means every category of driver converges at once. Left-turn crashes are the most common, usually when somebody tries to sneak through a stale yellow across five lanes of traffic. Rear-end collisions spike during the afternoon commute when the light cycles through faster than drivers expect.
Legacy Drive and the Dallas North Tollway
The Legacy area around the tollway has changed almost beyond recognition in the last ten years. Between Legacy West, corporate campuses, and the nearby hotels, this interchange gets hit by wave after wave of out-of-town drivers who don’t know the frontage-road flow. Merging crashes and sideswipes are routine. If you work along Legacy and commute through here daily, you’ve probably seen more than one.
Parker Road and Custer Road
Parker and Custer is the kind of intersection locals learn to respect. It sees a heavy mix of school traffic, delivery routes, and commuters cutting between US 75 and the tollway. Protected left-turn phases don’t always keep up with the volume, and T-bones happen when a driver assumes the oncoming lane is clear. If you’ve been hit at Parker and Custer, our Plano car accidents page walks through exactly what to document and why the first 48 hours matter.
McKinney’s Riskiest Crossings
McKinney’s growth along US 380 and US 75 has put pressure on intersections that were built for a much smaller city. Some of them have been redesigned. Some still feel like a coin flip.
US 380 and Custer Road
This is the one McKinney drivers talk about the most. US 380 carries east-west traffic from Denton all the way to Princeton, and Custer is the main north-south artery feeding into new subdivisions. Red-light running is an everyday problem here, and the crashes tend to be high-speed because 380 has long gaps between lights. Fatality reports have surfaced at this junction multiple times in recent years.
US 75 and Eldorado Parkway
Eldorado is where most drivers exit 75 to reach central McKinney. The off-ramp backs up quickly at peak times, and drivers still doing 60 on the main lanes don’t always notice until it’s too late. Rear-end pileups at the top of the ramp are common, and so are crashes on Eldorado itself as drivers jockey across lanes to reach Stonebridge or Custer.
Virginia Parkway and Stonebridge Drive
The Stonebridge corridor feeds into one of McKinney’s densest residential areas, which means school zones, heavy pedestrian activity, and a lot of left turns into neighborhoods. Distracted driving plays an outsized role in the crashes here. If you’re looking for broader context on McKinney intersections, the McKinney car accidents page covers what to expect when you’re filing a claim in this part of the county.
Allen’s Hotspots for Serious Crashes
Allen has added shopping, dining, and housing at a pace that’s outrun its road capacity in places. Two intersections stand out.
US 75 and Stacy Road
Stacy Road is the exit everybody takes for Watters Creek, Allen Premium Outlets, and the growing commercial strip east and west of 75. The traffic signals struggle during weekend peaks, and left-turn collisions from the frontage roads are a constant. If you’ve been hit trying to make a left off Stacy onto 75, you already know how quickly this one goes wrong.
McDermott Drive and Jupiter Road
McDermott and Jupiter has quietly become one of Allen’s worst crash corners. The intersection sits near multiple schools, a church complex, and a busy shopping center, so turning movements are high and sight lines are imperfect. Side-impact crashes dominate here. For anyone injured in Allen, the Allen car accidents page is a good starting point for figuring out your next steps.
Richardson’s Trouble Spots
Richardson’s challenge is different. It’s an older city laid out before the explosion in traffic, and many of its arterials cut across Central Expressway at awkward angles.
Campbell Road and Coit Road
Campbell and Coit handles tech-corridor commuters heading to the offices along Galatyn Parkway and the UT Dallas area. Left-turn lanes are short, through-lanes are heavy, and drivers trying to shoot across a yellow arrow cause most of the major crashes here. Rear-end collisions at the stop bar are also extremely common. You can learn more about that specific crash type on our Richardson rear-end accidents page.
Central Expressway and Belt Line Road
The Belt Line and Central interchange is Richardson’s version of an all-you-can-eat crash buffet. Exit ramps dump traffic into short stacking areas, the lanes shuffle near the service road, and drivers unfamiliar with the area routinely stop short or swerve. If you’ve ever been caught in a chain-reaction rear-end here, you’re not alone. It happens so often that local tow operators basically camp nearby.
What to Do If You’re Hit at One of These Intersections
Knowing the worst corners doesn’t help much once you’re already in a crash. What you do next matters a lot more than where it happened.
Document Everything at the Scene
Before you move your car, if it’s safe, take wide-angle photos of the intersection, the light, the skid marks, and the final resting positions of every vehicle involved. Photograph the other driver’s insurance card and license plate. If there are witnesses, get their names and numbers before they drive off. Insurance adjusters will try to dispute almost anything you cannot prove, and an intersection crash is usually a fight over who had the light. For a full checklist, take a look at our guide on what to do in the first 72 hours after a car accident.
Talk to a Personal Injury Lawyer Before the Insurer
This is the part people skip, and it’s almost always the part they regret. The other driver’s insurance company has one job, which is to pay you as little as possible. Recorded statements, early settlement offers, and rushed medical releases are all designed to close your claim quickly. An attorney can handle those calls, pull the crash report, preserve traffic camera footage before it’s overwritten, and bring in accident reconstruction specialists when needed. For background on how official records fit into a claim, read about the role of police reports in Dallas car accident claims.
A Final Word on Collin County’s Worst Corners
The intersections on this list are not going to get less busy. If anything, development along the tollway, 75, and 380 is going to keep adding vehicles to the same handful of lights. Driving defensively, leaving a real cushion behind the car ahead of you, and treating every green light as a suggestion rather than a guarantee can save you a lot of pain.
And if the worst happens at one of them, JML Injury Law handles crashes across Plano, McKinney, Allen, and Richardson every week. You can reach the team through our contact page for a free case review. No pressure, no fee unless we win, just a straight answer about where your case stands.