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The Illinois State Police (ISP) is the state police agency of the U.S. state of Illinois. The Illinois State Police is responsible for traffic safety on more than 300,000 miles of total roadway, including 2,185 miles of interstate highways and 15,969 miles of state highways. Currently, almost 3,000 sworn and civilian personnel make up the ...
The Illinois State Toll Highway Authority (ISTHA) is an administrative agency of the U.S. state of Illinois charged with building, operating, and maintaining toll roads in the state. The roads, as well as the authority itself, are sometimes referred to as the Illinois Tollway. [a] The system opened in 1958 in the Chicago area, and has ...
t. e. 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 ...
Illinois's state route numbers originated in 1918 as State Bond Issues 1 through 46, used to finance the new roads. The numbers of the bond issues were then used to mark the highway routes along the way. Another series of bond issues were authorized in 1924 (47–185) and again were used to mark the roads they paid for.
The act directed the state police to "increase the amount of cameras along expressways and the State highway system." Illinois State Police received a $12.5 million state grant in 2021 to install ...
Ten-codes, especially "10-4" (meaning "understood") first reached public recognition in the mid- to late-1950s through the popular television series Highway Patrol, with Broderick Crawford. [citation needed] Crawford would reach into his patrol car to use the microphone to answer a call and precede his response with "10-4".
The Illinois Department of Transportation (IDOT), Illinois State Toll Highway Authority (ISTHA), and Skyway Concession Company (SCC) are responsible for maintaining these highways in Illinois. The Interstate Highway System in Illinois consists of 13 primary highways and 11 auxiliary highways which cover 2,248.93 miles (3,619.30 km). [ 2 ]
A privately compiled list of Highway Patrol organizations and similar state police agencies is available on the web. [9] The Iowa State Patrol maintains a list of phone numbers and cell phone dialing codes for non-emergency calls to the dispatchers of the Highway Patrol organizations in all 50 states. [10]