Between August 8 and November 5, 2026, 511NY records stored by Long Island Traffic show 498 crash records on Nassau and Suffolk roads, across 81 counted days. Of those, 439 name an exit. Sagtikos State Parkway Exit S3 at Pine Aire Drive in Islip collected the most of any exit, with 14, according to the same records.
The 12 exits on the leaderboard combined for 109 crash records, or 24.8 percent of the exit-named records, 511NY data stored by Long Island Traffic show. The Long Island Expressway holds 7 of those 12 exits.
Sagtikos State Parkway Exit S3 leads with 14 crash records
511NY records stored by Long Island Traffic place crash records at 151 distinct road-and-exit locations. Of those locations, 65 had 3 or more.
At the top, Sagtikos State Parkway Exit S3 at Pine Aire Drive in Islip logged 14 crash records, according to the 511NY records. Two exits tie for second with 12 each in the same data: Long Island Expressway Exit 51 at Deer Park Avenue in Huntington and Southern State Parkway Exit 17N at Hempstead Avenue in Hempstead.
Long Island Expressway Exit 39 at Glen Cove Road in North Hempstead follows with 11, and Exit 40W at Jericho Turnpike in Jericho has 10, the 511NY records show.
The leaderboard table lists 2 possible repeat records at Exit 40W, according to Long Island Traffic’s 511NY records. A possible repeat is a record within 2 hours of an earlier one at the same exit and direction. Every other leaderboard exit shows 0.
Exits with the most 511 crash records, Nassau and Suffolk, August 8–November 5, 2026 (tied exits share a rank; a possible repeat is a record within 2 hours of an earlier one at the same exit and direction)
| Rank | Road | Exit | Exit name | 511 locality | Crash records | Possible repeat records |
|---|---|---|---|---|---|---|
| 1 | Sagtikos State Parkway | Exit S3 | Pine Aire Drive | Islip | 14 | 0 |
| 2 | Long Island Expressway | Exit 51 | Deer Park Avenue | Huntington | 12 | 0 |
| 2 | Southern State Parkway | Exit 17N | Hempstead Avenue | Hempstead | 12 | 0 |
| 4 | Long Island Expressway | Exit 39 | Glen Cove Road | North Hempstead | 11 | 0 |
| 5 | Long Island Expressway | Exit 40W | Jericho Turnpike | Jericho | 10 | 2 |
| 6 | Northern State Parkway | Exit 32 | Post Avenue | North Hempstead | 8 | 0 |
| 7 | Long Island Expressway | Exit 35 | Shelter Rock Road | North Hempstead | 7 | 0 |
| 7 | Long Island Expressway | Exit 37 | Willis Avenue | North Hempstead | 7 | 0 |
| 7 | Long Island Expressway | Exit 43 | South Oyster Bay Road | Syosset | 7 | 0 |
| 7 | Long Island Expressway | Exit 49N | NY 110 | Huntington | 7 | 0 |
| 7 | Meadowbrook State Parkway | Exit M1 | Old Country Road | Hempstead | 7 | 0 |
| 7 | Southern State Parkway | Exit 15 | North Corona Avenue | Hempstead | 7 | 0 |
Long Island Expressway holds 7 of the 12 leaderboard exits
511NY records stored by Long Island Traffic put 7 leaderboard exits on the Long Island Expressway. The Southern State Parkway has 2. The Sagtikos State Parkway, the Northern State Parkway and the Meadowbrook State Parkway have 1 each.
On the expressway, the leaderboard exits run from Exit 35 at Shelter Rock Road to Exit 51 at Deer Park Avenue, according to the 511NY records. Exits 35, 37, 43 and 49N each logged 7 crash records in that data.
The Northern State Parkway’s Exit 32 at Post Avenue in North Hempstead logged 8 crash records, the records show. The Meadowbrook State Parkway’s Exit M1 at Old Country Road in Hempstead logged 7.
Leaderboard exits by road
| Road | Exits in the leaderboard |
|---|---|
| Long Island Expressway | 7 |
| Southern State Parkway | 2 |
| Sagtikos State Parkway | 1 |
| Northern State Parkway | 1 |
| Meadowbrook State Parkway | 1 |
Every Exit 40W crash record was westbound
All 10 crash records at Long Island Expressway Exit 40W carried a westbound direction, according to the 511 direction field in Long Island Traffic’s records. Westbound also led at Exit 51, with 8 westbound and 4 eastbound. At Exit 39, the split was 7 westbound and 4 eastbound.
Southern State Parkway Exit 17N tilted the other way, the 511NY records show, with 11 eastbound and 1 westbound.
At Sagtikos State Parkway Exit S3, the 511 direction field shows 7 northbound, 4 westbound and 3 southbound records.
Direction of travel at the top 5 exits
| Road and exit | Crash records | Direction split (511 direction field) |
|---|---|---|
| Sagtikos State Parkway Exit S3 | 14 | Northbound 7, Westbound 4, Southbound 3 |
| Long Island Expressway Exit 51 | 12 | Westbound 8, Eastbound 4 |
| Southern State Parkway Exit 17N | 12 | Eastbound 11, Westbound 1 |
| Long Island Expressway Exit 39 | 11 | Westbound 7, Eastbound 4 |
| Long Island Expressway Exit 40W | 10 | Westbound 10 |
Afternoon was the busiest period at Long Island Expressway Exits 51 and 39
Long Island Expressway Exit 51 logged 7 crash records in the afternoon, from 3 to 6:59 p.m., according to the 511 “Reported” times stored by Long Island Traffic. Exit 39 logged 6 in that period.
Exit 40W followed a different pattern in the same data. Its busiest period was the morning, from 6 to 9:59 a.m., with 5 records.
Southern State Parkway Exit 17N was busiest at midday, from 10 a.m. to 2:59 p.m., with 5 records, the 511NY records show. Sagtikos State Parkway Exit S3 logged 4 records at midday and 4 in the afternoon.
Time of day at the top 5 exits (511 “Reported” time, Eastern) (Overnight = midnight–5:59 a.m.; Morning = 6–9:59 a.m.; Midday = 10 a.m.–2:59 p.m.; Afternoon = 3–6:59 p.m.; Evening = 7–11:59 p.m.)
| Road and exit | Overnight | Morning | Midday | Afternoon | Evening | Busiest period |
|---|---|---|---|---|---|---|
| Sagtikos State Parkway Exit S3 | 1 | 2 | 4 | 4 | 3 | Midday and Afternoon |
| Long Island Expressway Exit 51 | 2 | 3 | 0 | 7 | 0 | Afternoon |
| Southern State Parkway Exit 17N | 1 | 1 | 5 | 3 | 2 | Midday |
| Long Island Expressway Exit 39 | 0 | 2 | 2 | 6 | 1 | Afternoon |
| Long Island Expressway Exit 40W | 0 | 5 | 3 | 1 | 1 | Morning |
Exit 40W logged no weekend crash records
Long Island Expressway Exit 40W logged 10 crash records Monday through Friday and 0 on Saturday and Sunday, according to the 511NY records stored by Long Island Traffic.
Sagtikos State Parkway Exit S3 logged 12 weekday records and 2 weekend records, the same data show. Long Island Expressway Exit 51 and Southern State Parkway Exit 17N each logged 10 weekday and 2 weekend records. Exit 39 logged 8 weekday and 3 weekend records.
Weekday vs weekend at the top 5 exits
| Road and exit | Monday–Friday | Saturday–Sunday |
|---|---|---|
| Sagtikos State Parkway Exit S3 | 12 | 2 |
| Long Island Expressway Exit 51 | 10 | 2 |
| Southern State Parkway Exit 17N | 10 | 2 |
| Long Island Expressway Exit 39 | 8 | 3 |
| Long Island Expressway Exit 40W | 10 | 0 |
Source data come from the 511NY event feed maintained by NYSDOT, as recorded by Long Island Traffic.
How we measured this
- Records: 511NY accident-class records titled Crash, Vehicle fire or Overturned vehicle on all Nassau and Suffolk roads, stored by Long Island Traffic’s 511NY monitor, reported from 12:00 a.m. August 8 through 11:59 p.m. November 5, 2026 (Eastern). Queens records are excluded.
- Exit: the first exit named in each 511 record’s description (“at Exit 39 - Glen Cove Road (North Hempstead)”). Records that name no exit are counted in the total but not in the leaderboard. Exit numbers repeat across roads, so each location is a road plus an exit.
- Direction is the 511 record’s direction field; time of day and weekday come from its “Reported” time.
- The window is the last 90 complete days (81 counted after excluding days with missing 511 data); our 511 coverage expanded in June 2026, so no window reaches before July 1, 2026.
Limitations
- 511NY data was missing or incomplete on Aug 13, 2026, Aug 15, 2026, Sep 4, 2026, Sep 7, 2026, Sep 30, 2026, Oct 1, 2026, Oct 2, 2026, Oct 4, 2026, Oct 24, 2026 (a 511NY outage or capture gap); those 9 days are excluded, and all per-day and per-mile figures use the remaining 81 days.
- Long Island Traffic began reading 511NY’s new system on October 2, 2026. Records before and after that date come from different versions of the 511NY feed, and whether the two record incidents at the same rate has not yet been measured, so a change across that date may partly reflect the switch.
- A 511 record is not a verified crash: one collision can produce more than one record (see the possible-repeat column), and some crashes never reach 511. These are record counts, not crash totals.
- There is no traffic-volume denominator here: an exit with more traffic can collect more records without being more dangerous per vehicle.
- 511 places a record at the nearest named exit, which may be up to a mile or more from where the crash happened.
- Counts at single exits are small; the order among exits with similar counts can change from one quarter to the next.