Tailback (other)

	Tailback (other) Tailback can mean: * A position in American football at the "tail" end of the offensive formation, typically a halfback * A line of motor vehicles caught up in traffic congestion; a traffic jam See also Back (American football) In American football, a back is a player who plays off of the line of scrimmage (as opposed to a lineman). Historically, the term "back" was used to describe multiple positions on offense and defense, although more descriptive and specific positio ... Takeback (other) {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Halfback (American Football) A halfback (HB) is an offensive position in American football, whose duties involve lining up in the offensive backfield and carrying the ball on most rushing plays, i.e. a running back. When the principal ball carrier lines up deep in the backfield, and especially when that player is placed behind another player (usually a blocking back), as in the I formation, that player is instead referred to as a tailback. Sometimes the halfback can catch the ball from the backfield on short passing plays as they are an eligible receiver. Occasionally, they line up as additional wide receivers. When not running or catching the ball, the primary responsibility of a halfback is to aid the offensive linemen in blocking, either to protect the quarterback or another player carrying the football. History Overview Before the emergence of the T formation in the 1940s, all members of the offensive backfield were legitimate threats to run or pass the ball. Most teams used four offensive back ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Traffic Congestion Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, this results in some congestion. While congestion is a possibility for any mode of transportation, this article will focus on automobile congestion on public roads. As demand approaches the capacity of a road (or of the intersections along the road), extreme traffic congestion sets in. When vehicles are fully stopped for periods of time, this is known as a traffic jam or (informally) a traffic snarl-up. Traffic congestion can lead to drivers becoming frustrated and engaging in road rage. Mathematically, traffic is modeled as a flow through a fixed point on the route, analogously to fluid dynamics. Causes Traffic congestion occurs when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Back (American Football) In American football, a back is a player who plays off of the line of scrimmage (as opposed to a lineman). Historically, the term "back" was used to describe multiple positions on offense and defense, although more descriptive and specific position naming is now common. Thus, "back" can refer to positions including: Cornerback, a member of the defensive team that primary defends wide receivers Defensive back, a member of the defensive team who take positions somewhat back from the line of scrimmage Dimeback, a cornerback or safety who serves as the sixth defensive back Fullback, one of the two running back positions, along with the halfback * Halfback, one of the two running back positions, along with the fullback * H-back, an offensive position that lines up similarly to a tight end, but is set back from the line of scrimmage Linebacker, a member of the defensive team that is positioned approximately three to five yards behind the line of scrimmage Nickelback, a cornerback ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]