National Interstate will offer the traditional insurance product in all 50 US states through an open retail distribution network. Coverages are tailored to meet industry needs and include auto liability, physical damage, workers’ compensation, motor truck cargo, general liability and related coverages.

Tony Mercurio, executive vice president and chief operating officer of National Interstate said: "Having entered the crane, rigging and specialised carrier market in 2006, we not only fully understand the unique needs of specialty operators, we have the financial strength and stability required in this industry"

National Interstate is an active member of the Specialized Carriers & Rigging Association (SC&RA) since 2006.