Long Island is home to millions of residents who depend on a road network that was never designed to handle today’s traffic volume. While the busiest roads on Long Island include the Long Island Expressway (I-495), the Northern State Parkway, the Southern State Parkway, Sunrise Highway (NY-27), and Jericho Turnpike (NY-25), the worst times to drive are during morning and evening rush hours, on Friday afternoons, and during the summer beach season when out-of-town traffic floods the island’s major corridors. These are the windows when stop-and-go congestion, distracted driving, and aggressive lane changes peak — and when the risk of a serious collision is at its highest.
If you were hurt in a crash on one of Long Island’s congested roads, contact a car accident lawyer at Friedman & Simon, L.L.P.
High-Traffic Long Island Roads and Where Accidents Happen Most
Because Long Island’s road network funnels millions of daily commuters, commercial trucks, and seasonal travelers through a relatively narrow geographic corridor, certain highways and surface roads see a disproportionate share of serious accidents year after year. Here’s a closer look at the busiest roads on Long Island and the worst times to travel on them.
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The Long Island Expressway (I-495)
The Long Island Expressway — known to locals simply as “the LIE” — is the primary east-west artery running the length of Long Island from the Queens border all the way out to Riverhead. It is one of the most heavily traveled and most congested highways in the entire United States, and it has earned a reputation as one of the most dangerous roads in New York State.
Traffic is heaviest in the morning between 6:30 a.m. and 9:30 a.m. as commuters head westbound toward New York City, and again in the evening from approximately 4:00 p.m. to 7:30 p.m. as traffic reverses course heading east. The stretch between the Queens border and Exit 49 in Hauppauge is particularly prone to severe congestion, with sudden slowdowns and stop-and-go conditions that frequently lead to rear-end collisions. Aggressive lane changes, distracted driving, and fatigued commuters all contribute to a high rate of accidents along this corridor.
During the summer months, eastbound traffic toward the Hamptons and the East End intensifies significantly on Friday afternoons, with backups stretching for miles and accident rates climbing sharply.
The Northern State Parkway
The Northern State Parkway runs east-west through Nassau and Suffolk Counties, serving as a major commuter route for residents of communities like Jericho, Syosset, Huntington, and Commack. While it carries somewhat less volume than the LIE, its narrower lanes, older infrastructure, and limited shoulders make it particularly unforgiving when accidents occur.
Peak congestion on the Northern State typically occurs between 7:00 a.m. and 9:30 a.m. in the morning and from 4:30 p.m. to 7:00 p.m. in the evening. The parkway’s tight curves, aging pavement, and lack of commercial vehicle restrictions — which means passenger vehicles share the road with oversized loads in some sections — create conditions where a single accident can bring traffic to a standstill for miles. Rear-end collisions and sideswipe crashes are among the most common accident types on this road.
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The Southern State Parkway
The Southern State Parkway is one of Long Island’s most iconic roadways, stretching from Valley Stream in Nassau County eastward through Suffolk County toward Heckscher State Park. It is a critical commuter route for residents of the South Shore and a heavily used recreational corridor during the warmer months.
Traffic congestion is most severe between 7:00 a.m. and 9:30 a.m. and again from 4:00 p.m. to 7:00 p.m. on weekdays. On summer weekends, the Southern State becomes one of the most congested roads on Long Island as beachgoers head toward Jones Beach, Robert Moses State Park, and other South Shore destinations. The combination of high speeds, narrow lanes, and a surge of unfamiliar drivers during peak beach season creates dangerous conditions. Accidents near the Wantagh Parkway interchange and the Jones Beach causeway approaches are particularly common during summer weekends.
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Sunrise Highway (NY-27)
Sunrise Highway is a major surface-level arterial road running along Long Island’s South Shore from Valley Stream through Babylon and beyond. Unlike the parkways, Sunrise Highway passes through densely developed commercial corridors with frequent traffic signals, driveways, and pedestrian crossings — all of which increase the likelihood of collisions.
Traffic volumes peak between 7:30 a.m. and 9:00 a.m. in the morning and from 4:30 p.m. to 7:00 p.m. in the evening. The frequent stop-and-go nature of Sunrise Highway, combined with drivers making sudden turns into shopping centers and commercial properties, leads to a high number of rear-end collisions and angle crashes. Pedestrian accidents are also a concern along this corridor, particularly in more densely populated stretches through communities like Lynbrook, Rockville Centre, and Bay Shore.
Jericho Turnpike (NY-25)
Jericho Turnpike is one of Long Island’s oldest and most heavily traveled surface roads, running east-west through the heart of Nassau and Suffolk Counties. It passes through communities including Mineola, Garden City Park, Jericho, Syosset, Woodbury, and Huntington Station, serving as a critical connector for residents who rely on it for daily errands, commuting, and local travel.
Traffic congestion is pronounced between 7:30 a.m. and 9:00 a.m. and from 4:30 p.m. to 6:30 p.m. The road’s mix of commercial driveways, traffic signals, school zones, and pedestrian crossings creates frequent conflict points where accidents are common. Distracted driving, failure to yield, and speeding through yellow lights are among the leading causes of crashes along Jericho Turnpike. Intersection accidents — particularly at busy cross streets and shopping center entrances — are especially prevalent.
The Worst Times to Drive on the Busiest Roads on Long Island
Certain times of day and week consistently present higher accident risks across Long Island’s road network. Morning rush hour, between 6:30 a.m. and 9:30 a.m., and evening rush hour, from 4:00 p.m. to 7:30 p.m., are the most dangerous windows for Long Island drivers on any given weekday.
Friday afternoons after 2:00 p.m. are particularly hazardous, as commuter traffic combines with early weekend departures and, during the summer, a massive influx of beachgoers and Hamptons-bound travelers heading east on the LIE and Southern State Parkway. The worst times to drive on Long Island’s busiest roads also include holiday weekends — Memorial Day, Fourth of July, and Labor Day all bring dramatically elevated traffic volumes and accident rates across Nassau and Suffolk Counties.
Weather is a significant factor as well. Long Island’s winters bring ice, snow, and freezing rain that can make even familiar roads treacherous, while summer thunderstorms can reduce visibility and create slick conditions with little warning. Drivers who are accustomed to Long Island’s roads in fair weather are often unprepared for how quickly conditions can deteriorate, and accident rates spike sharply during and immediately after severe weather events.
Why Legal Guidance Matters After an Accident on a Busy Long Island Road
Even the most careful and experienced Long Island driver can find themselves in a serious collision caused by someone else’s negligence. When that happens, the consequences can be life-altering — mounting medical bills, time away from work, and physical and emotional pain that can last for months or years.
Consulting with a Long Island personal injury lawyer ensures that you understand your legal rights and the full scope of compensation you may be entitled to pursue. New York is a no-fault insurance state, which means that certain rules govern when and how you can file a fault-based claim against a negligent driver. Having an experienced attorney in your corner ensures that you navigate these rules correctly and do not leave compensation on the table.
At Friedman & Simon, L.L.P., we represent injured victims across Nassau County, Suffolk County, and the surrounding communities. Our team handles car accident cases, truck accident cases, and other serious collisions caused by negligent drivers on Long Island’s most dangerous roads. With more than $250 million recovered for our clients over more than 25 years, we have the experience and the track record to fight for the outcome you deserve.
If You Were Hurt in a Crash on Long Island, Contact Friedman & Simon
It’s no secret that Long Island is home to some of the most congested roads in New York, and certain times of day are far more dangerous than others. But no matter how carefully you plan your route or how diligently you avoid peak traffic hours, you can still find yourself in a serious collision caused by another driver’s negligence.
If that happens to you, Friedman & Simon, L.L.P. is here to help. Our team of experienced Long Island personal injury attorneys is ready to fight for your rights and pursue the full compensation you deserve. Contact us today for a free consultation.
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