This course in Highways consists of lectures, student reports and problems, covering the following topics: highway location, with special attention to the part reconnaissance surveys and traffic surveys play in determining the proper location for a highway; the design of roads, dealing with the establishing of grade lines, street intersections, curves, cross-sections and grade separations; grading; highway drainage; soil studies, especially the characteristics of subgrade soils, the grouping of subgrade soils and the conclusions to be drawn from soil studies; non-bituminous and bituminous materials for low-cost roads; natural subgrade treatments and untreated surfaces; bituminous surface treatments; road-mixed and plant-mixed bituminous surfaces; bituminous-macadam bituminized cement and cement-bound macadam roads; portland-cement concrete pavements; base courses for pavements; both hot-mix and cold-laid bituminous pavements; maintenance of bituminous pavements; brick and block pavements; the construction and location of sidewalks, curbs, gutters, guard rails and other appurtenances; highway beautification and lighting; estimates, contracts, and specifications; street cleaning and snow removal; and the location and construction of landing fields and runways for airports. The field work in Highways is given in connection with the field work in Surveying CE 2. _Texts: Bruce, “Highway Design and Construction”; Pickels and Wiley, “Route Surveying”; Van Houten, “Problems in Highways, C. E. 20”._ CE 21 Highways. Prerequisites, CE 2, CE 20. This is a course in Highway Design in which two problems are undertaken. In the first, plans are prepared for the improvement and paving of about one-quarter mile of city streets. Details of sidewalks, curbs, pavements and drainage are taken into account. The field notes for this problem are obtained in the course in Surveying CE 2. In the second problem a paper location of a highway is made from a contour map (similar to that prepared in Surveying CE 2) for about two miles of rural highway. Plans are prepared which subscribe to the practice and standards of the New Jersey State Highway Department. Attention is given to alignment, grade and cost, with a special study made of the earth quantities and placement. _Texts: Bruce, “Highway Design and Construction”; Pickels and Wiley, “Route Surveying”._ CE 22 Highway Traffic Control. Prerequisite CE 20. A course designed to give the student a comprehensive knowledge of the problems encountered in the field of highway traffic control together with a thorough study of current methods of dealing with those problems.