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Show Fills Definite Need Well Only When Conditions Are Right "Altho the use of trailers or semitrailers semi-trailers Is feasible and prontablo under un-der many conditions, the truclc owner always should consult the truck maker beforo installing such equipments. Adverse Ad-verse operating conditions sometimes would make the use of trailers ruinous," ruin-ous," says an eastern writer. "Given proper conditions, however, the trailer or semi-trailer fills a definite def-inite need. Some of the many things that trailers can do are: (1) Reduce load-handling delays, by enabling tho operator to load or unload one trailer while the truck is hauling another; (2) haul units too heavy for a single truck but which can be moved with the power pow-er of a single engine such as boilers, heavy machinery, etc.; (3) carry bulky but light articles which would utiliize only half the power of the engine If loaded on to a single truck. Barrels and boxes are in this class; (4) haul lengthy material too long to be loaded onto a truck, such as ship masts, motor mo-tor boats, timbers and poles; (50 introduce in-troduce trucks more extensively Into the lumber trades by overcoming the unprofitable loading and unloading and interchangeable semi-trailers; (6) in- crease greatly the carrying capacity of passenger buses. "Tho transportation aepartmonts of progressive truck manufacturers have mado extended investigations and study of trailers and are In position to give honest advice as to their desirability desira-bility under specific conditions. The question of what tractor gear ratios should be specified, of whether semitrailers semi-trailers or four-wheel trailers should bo used,, of the method of attaching, all enter into the problems surrounding surround-ing their uso and tho expert services of truck and transportation engineers should be enlisted beforo a decision is made." |