Interactive Display Manipulation to 
= correct errors, 
- implement field checking results, 
- fit models and map sheets together, 
- ‘update digital maps, 
- enter and edit names for lettering, 
- display and edit programs, 
- control map contents before automated plotting, 
- Solve problems of generalization and displacement by compu- 
ter aided methods. 
Contributions from members of the Working Group IV/1 
  
The following contributions to the report of the Working Group 
IV/1, highway and Railway Engineering will serve as a review of 
the present status of the application of photogrammetry and of the 
DTM-technique to highway and railway planning and design. 
The Application of Photogrammetry to Highway and Railway Design 
in Mexico during the period 1972-76. Reporter Mr Bulmaro Cabrera 
Ruiz, M.Sc., Ministry of Public Works, Mexico. 
  
  
Review of the Present Status of the Application of Photogrammetry 
to Highway and Railway Design in Australia together with the trend 
of further development. Reporter Mr W B R Smith, B.E., M.Sc., De- 
partment of Main Roads, New South Wales, Australia. 
  
  
  
Photogrammetry in Highway Design in Sweden. Reporter Mr Bengt 
Adolfsson, Civ.eng., Swedish National Road Administration, Stock- e 
holm, Sweden. | 
  
Review of the Present Status of the Application of Photogrammetry 
and Digital Terrain Model to Earth Design in Japan. Reporter Dr 
Shunji Murai, Institute of Industrial Science, University of Tokyo, 
Japan. 
  
  
The Generation and Application of the Digital Terrain Model. Repor- 
  
ter Mr Richard O Mahan, U.S. Forest Service, U.S.A. 
Review of the Present Status of the Application of the Digital 
Terrain Model and the Semiautomated Photogrammetric Technique to 
Highway and Railway Design and the Trend of Further Development. 
Digital Terrain Model (DTM) and Digital Contouring - Digitally 
controlled Orthophoto Production. Reporter Prof Dr Karl Krauss, 
Vienna Technical University, Vienna, Austria. 
Photogrammetrical point determination of the track surveing. 
Summary of an invited paper prepared by Dr.Ing. Kothe, Deutsche C 
Bundesbahn, Mainz, W. Germany. 
  
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