The RS-24 "Yars" (NATO codename of "SS-29") appears to be the successor to the SS-25 / SS-27 "Topol" mobile InterContinental Ballistic Missile (ICBM) launcher units. These vehicles were introduced in July 2010 and utilize the TEL MZKT-79221 eight-axle carrier vehicle as the launcher component. The rocket portion was evaluated in the mid-to-late 2000s before seeing introduction. The West believes these launchers to be in violation of the START Treaty as they perceive the design to be nothing more than an extension of the existing Topol missile series and launchers; the Russians counter with the Yars being a direct response to the America-made missile shield being deployed to NATO allies across Europe near Russia's borders.
The missile component of Yars incorporates a solid-fueled booster rocket with an operational range out to 7,500 miles, reaching speeds in excess of 15,220 miles per hour. Guidance is through an inertial-based system and accuracy is within 250 meters. The launcher component is an eight-axle ultra-heavy-duty truck. The missile sits over the top of the truck and splits the forward mounted driving cab which overhangs the chassis. The sides of the hull are lined with large road wheels with a few of the axles being steerable. Special training is required for driving crews of the Yars mobile component.
The Yars system is deployed by Strategic Missile Troops of the Russian Army and currently stock the inventory of five divisions across the Russian frontier. At least twelve of the eighty-four deployed missiles are fixed, silo-based versions, leaving the remainder as mobile launch platforms.