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Material Transfer Vehicle. Used to assist the paver in accepting HMA. Most pavers are equipped to receive HMA directly, however in certain situations it can be necessary or advantageous to use an MTV. Paving using bottom dump trucks and windrows requires a windrow elevator MTV while other MTVs are used to provide additional surge volume allowing the paver to operate continuously without stopping, minimizing truck waiting time at the paving site and minimizing segregation and temperature differentials.