Show government HELP IS READY office of public roads of department of agriculture testing materials material and their usefulness so far has haa the goVern government meni advanced in the problems connected with road construction that efforts are now being made to teach tho the country that tho the expenditure of largo large sums euma of money on certain typos of roads may result almost in a total waste A road built of materials which would be ideal in one locality may not serve the purpose at all else where and the money expended may mar bring 9 Bc arcely any result in reducing the cost of hauling or making it easier caster for tho the farmer to got get to the ship shipping pinal point with his crops in order to aid farmers who want to build their own roads roada and to assist various communities that desire to improve tho the roads near by theof the ot flee of bublin roads of tho the department of agriculture has employed experts to test all materials and study abir usefulness on roads subjected to cor certain traffic conditions tho the office ol of public roads Is now acting in an advisory capacity to many states and countries giving a most moat practical form of national aid on roads where there Is a very heavy traffic it has haa been found that certain kind of materials are am better than others and that while ono one kind of binder may not serve the at all another kind is ideal and d pro pre serves the road indefinitely millions of dollars doubtless have been wasted in the past because of tho the absence ol of the scientific knowledge which is now nom eing being obtained there to la no lougee an any y excuse for any community build ing the wrong kind of road as tho theat lot flee of public roads stands ready td furnish any information that may ba b Id desired estred as to tho the course that should ibo ibe pursued in discussing the new scientific movement in road improvement dl di pago of the office of public broads says there are two ways in which the engineer may avail himself of the in formation necessary nece effary ti to a proper 9 sr lection of road material the first and only certain one is to make an actual service test on the material under observation and under tho the same conditions of traffic and climate to which the proposed road will be subjected this method however la is impractical except in certain rare instances due to the lapse of time which must elapse before definite results can be obtained the second method thod is by means of X short abort time laboratory a b to tn its to approximate as vearly nearly as possible the destructive agencies to which the material will be subjected on the road supplementing the knowledge thus gained by a study of the results already obtained in practice on material of a similar nature the office of public roads constantly uses both methods at chevy chase near washington D 0 a model road has been built in sections made of different materials whilo while czi in the laboratory of the office tests testa are con scantly being made with scientific accuracy to determine tho the exact value of certain materials under certain traffic condit conditions tons i 1 |