Mine Protected Vehicles
The Medium Mine Protected Vehicle (MMPV) is a class of armored vehicles currently being procured by the US Army, similar to the MRAP program, which is currently being pursued by the US Army as well as the US Marine Corps.
Mine Resistant Ambush Protected (MRAP) vehicles are a family of armored fighting vehicles designed to survive IED attacks and ambushes. IEDs cause the majority of US deaths in Iraq.
MRAP vehicles usually have "V" shaped hulls to deflect away any explosive forces originating below the vehicle, thereby protecting the vehicle and its passenger compartment. Typically these explosions are from land mines, but they can also be IEDs. The MRAP class is separated into three categories which describe the vehicle's weight class and size.
Category 1 (MRAP-MRUV) - The Mine Resistant Utility Vehicle (MRUV) is smaller and lighter, designed for urban operations. Examples are the RG-31 Medium Mine Protected Vehicle and the MaxxPro Mine Resistant Utility Vehicle.
Category 2 (MRAP-JERRV) - The Joint Explosive Ordnance Disposal (EOD) Rapid Response Vehicle (JERRV) is designed for missions including convoy lead, troop transport, ambulance, explosive ordnance disposal and combat engineering. Examples are the Cougar EOD vehicle and the MaxxPro XL Mine Protected Vehicle.
Category 3 - Provides mine/EOD clearance operations by giving units survivable ground mobility platforms. An example of this is the Buffalo mine protected vehicle with dedicated mine/IED clearing function.
This program is very similar to the US Army's Medium Mine Protected Vehicle program.