The California Highway Patrol (CHP) is the principal state police agency for the U.S. state of California. The CHP has primary patrol jurisdiction over all California highways and roads and streets outside city limits, and can exercise law enforcement powers anywhere within the state. The California Highway Patrol can assist local and county agencies and can patrol major city streets along with local and county law enforcement, state and interstate highways, and is the primary law enforcement agency in rural parts of the state.
Interstate 895 (I-895) is an auxiliary Interstate Highway in the US state of Maryland. Known as the Harbor Tunnel Thruway, the highway runs 11.44 miles (18.41 km) between one junction with I-95 in Elkridge and another interchange with I-95 on the east side of Baltimore. I-895 is a toll road that crosses the Patapsco River estuary via the Baltimore Harbor Tunnel, connecting U.S. Route 1 (US 1), I-695, and the Baltimore–Washington Parkway in the southwestern suburbs of Baltimore with US 40 on the east side of Baltimore. In conjunction with a pair of spurs, unsigned I-895A and I-895B, I-895 provides access to the tunnel from I-97 and Maryland Route 2 (MD 2) in Glen Burnie. The highway is designed for through traffic by having partial interchanges that require vehicles from almost all starting points to pass through the tunnel and the tunnel toll plaza, where a $1.40-$6.00 toll is charged to passenger vehicles, before exiting the facility.
Interstate 695 (I-695) is a 51.46-mile-long (82.82 km) auxiliary Interstate Highway that constitutes a beltway extending around Baltimore, Maryland, United States. I-695 is officially designated the McKeldin Beltway but is colloquially referred to as either the Baltimore Beltway or 695. The route is an auxiliary route of I-95, intersecting that route southwest of Baltimore near Arbutus and northeast of the city near White Marsh. It also intersects other major roads radiating from the Baltimore area, including I-97 near Glen Burnie, the Baltimore–Washington Parkway near Linthicum, I-70 near Woodlawn, I-795 near Pikesville, and I-83 in the Timonium area. The 19.37-mile (31.17 km) portion of the Baltimore Beltway between I-95 northeast of Baltimore and I-97 south of Baltimore is officially Maryland Route 695 (MD 695) and is not part of the Interstate Highway System but is signed as I-695. The Francis Scott Key Bridge that crossed over the Patapsco River was included in this section of the route before the bridge's collapse on March 26, 2024. The bridge and its approaches were maintained by the Maryland Transportation Authority (MDTA), while the remainder of the Baltimore Beltway is maintained by the Maryland State Highway Administration (MDSHA).
The Maryland Transportation Authority (MDTA) is an independent state agency responsible for financing, constructing, operating, and maintaining eight transportation facilities, currently consisting of two toll roads, two tunnels, and four bridges in Maryland. It also provides the Maryland Department of Transportation with financing for other revenue producing transportation projects.
The Francis Scott Key Bridge was a steel arch continuous through truss bridge that spanned the lower Patapsco River and outer Baltimore Harbor/Port in Maryland, United States. Opened on March 23, 1977, it carried the Baltimore Beltway between Dundalk in Baltimore County and Hawkins Point, an isolated southern neighborhood of Baltimore, while briefly passing through Anne Arundel County. The main spans and part of the northeastern approach of the bridge collapsed on March 26, 2024, after the container ship MV Dali struck one of its piers.
The Metropolitan Transportation Authority Police Department (MTAPD) is a division of the Metropolitan Transportation Authority in New York state. MTA police officers are fully empowered under the New York State Public Authorities Law and are commissioned in the state of Connecticut. Their geographic area of employment extends to all counties in New York served by the Metropolitan Transportation Authority, giving officers the ability to exercise full police authority within the counties of Dutchess, Putnam, Orange, Rockland, Westchester, Nassau, Suffolk, and in New York City.
The Washington State Patrol (WSP) is the state patrol agency for the U.S. state of Washington. Organized as the Washington State Highway Patrol in 1921, it was renamed and reconstituted in 1933. The agency is charged with the protection of the Governor of Washington and the grounds of the Washington State Capitol; security aboard the vessels and terminals of the Washington State Ferries; law enforcement on interstate and state highways in Washington; and providing specialized support to local law enforcement including laboratory forensic services, mobile field forces during periods of civil unrest or disaster, and tactical teams. The State Fire Marshal's Office, responsible for operation of the Washington State Fire Training Academy and for certain aspects of civil defense mobilization, is a component office of the Washington State Patrol, and the State Patrol is the managing agency of the Washington Fusion Center, which coordinates anti-terrorist and anti-organized crime activities within Washington.
The Wisconsin State Patrol is the state patrol for the state of Wisconsin and is a division of the Wisconsin Department of Transportation. The Wisconsin State Patrol enforces traffic and criminal laws, oversees the motor carrier safety and weight facilities (SWEFs), inspects and regulates motor carriers, school buses and ambulances, and assists local law enforcement agencies with traffic safety, civil disturbances and disasters.
The Maryland State Police (MSP), officially the Maryland Department of State Police (MDSP), is the official state police force of the U.S. state of Maryland. The Maryland State Police is headquartered at 1201 Reisterstown Road in the Pikesville CDP in unincorporated Baltimore County.
Interstate 95 (I-95) is an Interstate Highway running along the East Coast of the United States from Miami, Florida, north to the Canada–United States border at Houlton, Maine. In Maryland, the route is a major highway that runs 110.01 miles (177.04 km) diagonally from southwest to northeast, entering from the District of Columbia and Virginia at the Woodrow Wilson Bridge over the Potomac River, northeast to Maryland's border with Delaware near Elkton. It is the longest Interstate Highway within Maryland and is one of the most traveled Interstate Highways in the state, especially between Baltimore and Washington, D.C., despite alternate routes along the corridor, such as the Baltimore–Washington Parkway, U.S. Route 1 (US 1), and US 29. I-95 also has eight auxiliary routes in the state, the most of any state along the I-95 corridor. Portions of the highway, including the Fort McHenry Tunnel and the Millard E. Tydings Memorial Bridge, are tolled.
The Port Authority of New York and New Jersey Police Department, or Port Authority Police Department (PAPD), is a law enforcement agency in New York and New Jersey, the duties of which are to protect and to enforce state and city laws at all the facilities, owned or operated by the Port Authority of New York and New Jersey (PANYNJ), the bi-state agency running airports, seaports, and many bridges and tunnels within the Port of New York and New Jersey. Additionally, the PAPD is responsible for other PANYNJ properties including three bus terminals, the World Trade Center in Lower Manhattan, and the PATH train system. The PAPD is the largest transit-related police force in the United States.
The Baltimore Harbor Tunnel is a pair of two-lane road tunnels carrying I-895 under the Patapsco River southeast of downtown Baltimore, Maryland.
The Oklahoma Highway Patrol (OHP) is a major state law enforcement agency of the government of Oklahoma. A division of the Oklahoma Department of Public Safety, the OHP has traffic enforcement jurisdiction throughout the state. OHP was legislatively created on July 1, 1937, due to the growing problem of motor vehicle collisions, the expansion of highway systems, and the increase in criminal activities.
The Maine State Police (MSP) is the state police agency for Maine, which has jurisdiction across the state and was created in 1921.
The New Jersey Transit Police Department (NJTPD) is a transit police agency of the New Jersey Transit Corporation in the state of New Jersey. As provided by NJS Title 27:25-15.1, New Jersey Transit Police Officers have "general authority, without limitation, to exercise police powers and duties, as provided by law for police officers and law enforcement officers, in all criminal and traffic matters at all times throughout the State and, in addition, to enforce such rules and regulations as the NJ Transit Corporation shall adopt and deem appropriate."
The Maryland Natural Resources Police (NRP) is the law enforcement arm of the Maryland Department of Natural Resources (DNR), tasked with enforcing laws on the state's public lands and waterways, protecting fish and wildlife, and leading search and rescue efforts. The Natural Resources Police is also the state's maritime homeland security agency.
The Baltimore County Sheriff's Office (BCoSO) is a Sheriff's Office in Baltimore County, Maryland, US, and the secondary law enforcement agency of the County which provides protection for the Baltimore County Courthouse in Towson, Maryland. The Baltimore County Sheriff's Office is one of the oldest sheriff's offices in existence in the State of Maryland, dating back to 1659, the year of the County's founding.
In the United States, the state police is a police body unique to each U.S. state, having statewide authority to conduct law enforcement activities and criminal investigations. In general, state police officers or highway patrol officers, known as state troopers, perform functions that do not fall within the jurisdiction of a county’s sheriff, such as enforcing traffic laws on state highways and interstates, overseeing security of state capitol complexes, protecting governors, training new officers for local police forces too small to operate an academy and providing technological and scientific services. They also support local police and help to coordinate multi-jurisdictional task force activity in serious or complicated cases in states that grant full police powers statewide.
Arkansas Highway Police is a state police division of the Arkansas Department of Transportation. The Arkansas Highway Police is responsible for enforcing motor vehicle laws, traffic laws, and commercial vehicle enforcement. It is the second-largest state law enforcement agency in Arkansas after the Arkansas State Police. It was founded in 1929 and is the oldest law enforcement agency in Arkansas.
The Baltimore City Sheriff's Office is the law enforcement arm of the Circuit Court of Maryland, serving Baltimore, Maryland. The office is headquartered in Courthouse West of the Baltimore City Circuit Courthouses, which also serves as the sites for Baltimore City branch of the Circuit Court of Maryland.
