This is a speed trap but also other vehicle and traffic laws are enforced here that is located on the William Floyd Parkway between the LIE and the exit for 25 East/Riverhead. While traveling north on the William Floyd Parkway you have the Brookhaven National Laboratory property which takes up the majority of this road way between the LIE and 25 East/Riverhead exit. You will see the Upton, NY/Brookhaven National Laboratory Police and the US Federal Protective Service enforcing laws. On occasion you will see the Suffolk County Police/Highway Patrol and the Suffolk County Sheriffs Office on this stretch, north bound. While traveling south bound on the same stretch of road you will see the Upton, NY/Brookhaven National Laboratory Police, the US Federal Protective Service, Suffolk County Police/Highway Patrol and the Suffolk County Sheriffs Office. I have seen vehicles pulled over by all 4 of them going both north and south bound.