A motorcade, or autocade, is a procession of vehicles.
The term motorcade was coined by Lyle Abbot (in 1912 or 1913 when he was automobile editor of the Arizona Republican), and is formed after cavalcade on the false notion that "-cade" was a suffix meaning "procession". In fact, there is no such suffix in either French or Latin, although -cade has now since become a productive suffix in English, leading to the alternative names carcade, autocade, and even Hoovercade (after J. Edgar Hoover). Eric Partridge called the name a "monstrosity", and Lancelot Hogben considered the word to be a "counterfeit coinage". The original suffix in cavalcade is actually "-ade".
Motorcades can be used as protests and demonstrations. A large, organised, group of vehicles will travel a busy route at very slow speed in order to deliberately cause traffic disruption. This is a tactic most often associated with protest groups that have access to many large vehicles, such as truckers and farmers. An example is the 2005 UK protests against fuel prices. As part of the Euromaidan protests in Ukraine in November 2013--February 2014, the sub-movement that made use of car processions as the means of protest was called the Automaidan.
Motorcades can be used to transport a very important person, usually a political figure. Such a procession consists of several vehicles, usually accompanied by law enforcement support and additional protection to ensure the safety of the people in the motorcade. Motorcades for heads of government and heads of state can consist of dozens of vehicles, those being armoured cars, SUVs, and police motorcycles and cars leading the way and following.
Depending on the size of the motorcade and who it is carrying, routes may be completely blockaded from the general public. For security, this often occurs for motorcades for heads of state or government.
The motorcade for the President of the United States comprises forty to fifty vehicles; in addition to the president, the motorcade may carry his or her spouse, members of the press, security, White House officials, and VIP guests. The major members travel in armored vehicles, typically specially configured limousines. The motorcade contains several armored vehicles, a USSS Electronic Countermeasures Suburban, a counter-assault team, and Secret Service agents. When called for, a hazardous materials team precedes the motorcade on alert for potential hazards.
A police presence precedes the beginning of the presidential motorcade. These cars and motorcycles usually drive ahead to clear the way and block traffic.
The motorcade for the president is made up of two parts, the first being the "secure package". In the event of an emergency, the secure package separates from the rest of the group. It includes two limousines heavily guarded by local law enforcement and Secret Service, with all cars driven by professional drivers.
The second part is made up of vans that transport White House staff members and selected members of the press. In the rear is the WHCA Roadrunner communications van - which provides the primary communications path via satellite, allowing bi-directional voice, data and streaming video - an ambulance, and additional police vehicles.
Motorcade routes are selected by Secret Service agents in cooperation with local police forces. Escape routes are also established in the event of an emergency. And
The motorcade for the President of South Korea comprises twenty to thirty vehicles; in addition to the president, the motorcade may carry his or her spouse, members of the press, security, Blue House officials, VIP guests, family, friends and cabinet members. High ranking cabinet members travel in armored vehicles, typically specially configured limousines or armored Cadillac Escalade's. The motorcade contains several armored vehicles of different car brands, there is a counter-assault team, Presidential Security Service agent's, medical teams, police escorts from the Korean National Police Agency and other unknown unmarked vehicles.
The police escort usually precedes the Presidential motorcade to clear the way, block traffic and shut down the streets for the motorcade.
The motorcade is divided into two different parts, the first half being the part of the motorcade carrying the president and his or her spouse the second half carrying Blue House staff, more security and the press.
The routes for the motorcade are selected by the Presidential Security Service agents with cooperation with local police forces. There is always an emergency route set incase of any emergency's before the President goes anywhere.
Motorcade following the inauguration of George W. Bush, 2001
Funeral motorcade of Russian patriarch Alexy II in 2008