This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
A lateral vector transporter was a type of transporter technology used by the Federation. By 2249, it was considered obsolete due to the massive amount of power it consumed. The Vulcans and Starfleet had phased out such transporters, though they were still present aboard some older vessels, such as the Walker-class USS Shenzhou. (DIS: "Battle at the Binary Stars")