PROGRAMMSYSTEM ZUR OPTIMIERUNG DES STRASSENENTWURFS. TEIL IV. DV-STANDARDQUERSCHNITT. TEIL VI. PARTIELLE VERSCHIEBUNG DER LINIENFUEHRUNG IM LAGEPLAN. TEIL VIII. SICHTWEITE ALS ENTWURFS-UND OPTIMIERUNGSKRITERIUM (PROGRAM SYSTEM FOR THE OPTIMIZATION OF HIGHWAY DESIGN. PART IV: STANDARD CROSS SECTION SUITABLE FOR ELECTRONIC DATA PROCESSING. PART VI: PARTIAL SHIFTING OF HORIZONTAL ALINEMENT. PART VIII: SIGHT DISTANCE AS A CRITERION FOR DESIGN AND OPTIMIZATION).

In view of the progressing development of the EPOS program system for the optimization of horizontal and vertical alignment in highway design a more exact identification of cross section parameters for the calculation of different individual sections became necessary. Such calculations require that flexible and standardized programs for the calculation of cross sections be available. In order to set up such computer programs, a standardization of typical cross sections suitable for electronic data processing was achieved by elaborating cross section parameters suitable for electronic data processing. Within this context, a so called model cross section, in short DVQ', was developed as a general framework within which any cross section can be described by means of uniform parameters and represented in a form suitable for electronic data processing. On the basis of these preparations, in particular, the detailed parameter table drawn up, a system and program development of a universal set of programs for an extended range of application could be tackled once design optimization had been solved. For this purpose, uniform data input forms for conventional typical and special cross sections were first drawn up. After further elaboration of the design requirements still to be settled, the system was conceived, realized and documented. The possibilities of the partial shifting of horizontal alignment were to be examined as a further development of the findings resulting from previous development stages of the program system for the optimization of highway design. In view of the requirement stipulated in the RALL-1 that the necessary stopping sight distance and an adequate proportion of passing sight distances be provided, it proved to be necessary to consider the sight distance criterion already at the stage of initial alignments.