. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Shoulder drag on State Highway in Ffo.^ikj Maintenance station at Ilishop in li DIVISION OF HIGHWAYS 73 recent production of an intermediate capacity, will no doubt eventuallyeliminate the lijjhtcr type as the added power and field of work morethan offset its increased cost of operation. Under our gfeneral condi-tions of blade grader use, the crawler type tractor has proved moresatisfactory as a motive unit rather than when unified with the use of rubber
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Shoulder drag on State Highway in Ffo.^ikj Maintenance station at Ilishop in li DIVISION OF HIGHWAYS 73 recent production of an intermediate capacity, will no doubt eventuallyeliminate the lijjhtcr type as the added power and field of work morethan offset its increased cost of operation. Under our gfeneral condi-tions of blade grader use, the crawler type tractor has proved moresatisfactory as a motive unit rather than when unified with the use of rubber treads to reduce the abrasive action on certain typesof road surface has not proved economical and it is felt the use of streetplates, topfether with proper caution when turning, Avill do much toreduce this damage. Wheel tractors, either drawing drags or with grader attached, havemet and satisfactorily solved one of our big problems of surface main-tenance; however, the particular surface condition prompting tlie useof tractor graders is gradually clianging as a result of the light oilsurface treatments. Where formerly a tractor grader was assigned toevery ten mile
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Keywords: ., bookcentury1800, bookdecade1850, bookidappendixtojo, bookyear1853
