Paper  doi  bibtex   

@article{RN648,
   author = {Council, Forrest M.},
   title = {Safety Benefits of Spiral Transitions on Horizontal Curves on Two-Lane Rural Roads},
   journal = {Transportation Research Record},
   volume = {1635},
   pages = {10-17},
   ISSN = {0361-1981},
   DOI = {10.3141/1635-02},
   url = {http://trrjournalonline.trb.org/doi/abs/10.3141/1635-02},
   year = {1998},
   type = {Journal Article}
}