Abstract
Use of two Concepts or the Value or Time Dan Go Haney Effect of Highway Improvement on Travel Time of Commercial Vehiclesl a Twenty-five-year Case Study Gerald A. Fleischer Direct Costs and Frequencies of 1958 Illinois Motor- vehicle accidents Charles Mo Billingsley and Dayton Po Jorgenson Benefit-cost Ratios' a Word of Caution Gerald Wo Smith Discussion8' Gerald Ao FleischerJ Gerald W. Smith The Annual Cost of Highways R.Ho Baldook Disous8ionsl Harold W. Hansen, RoHo Baldook Progr~ng Highw&¥ Acoident Reduction Rc)" E. Jorgensen An Economic Replacement Model for Highway Surfaoe Determination John Wo Work, Jro Disoussionsl Harold Wo HansenJ John Wo Work