Show 0 STAND TRUCK TRAVEL comprehensive experiments experiment and tests now being made by bureau of public roads state highway departments are vitally interested in the successful outcome of comprehensive experiments experiment a and tests now being made by the bureau buman of public roads of the united states of sericulture agriculture one slate engineer recently declared that millions of dollars in III ills his state tit are e involved in the proper design of road surfaces which make up one i of df the problems eni bellig being investigated by tho th federal engineers i tho 1110 coming into general use of the th heavy motor truck has practically revolutionized the science of road building big new problems come came when loads weighing 10 to 15 tons took the place of vehicles cles that placed a ft eight j of one fourth ns as much or less the roads built ten years ago wore were constructed ted before this fact could be real T 10 constructing road sections for tin pact tests jred which is one of the reasons why many permanent roads have proved ato to be impermanent one of the testing experiments be made ade by the federal bureau inthe lie use of a 49 section roadway ata in the hie arlington farm owned by the department of agriculture each sec t llon lion was built froni from a different type pt of material or bilth a different method adt f construction the some use Is given to each section so BO that even even trally ta ally the type lype of construction best suited to ro heavy traffic will prove itself |