 INDIANAPOLIS--BUSINESS WIRE--Allison Transmission, a leading designer and manufacturer of conventional and electrified vehicle propulsion solutions and the largest global manufacturer of medium- and heavy-duty fully automatic transmissions for commercial and defense vehicles, is pleased to announce that the Allison 3414 Regional Haul SeriesTM RHS has been integrated into Daimler Trucks North Americas DTNA Class 8 Freightliner Cascadia Day Cab models, paired with a DD13 Gen 5 engine rated 