@article{oai:mie-u.repo.nii.ac.jp:00006341,
 author = {山崎, 忠久 and Yamazaki, Tadahisa},
 journal = {三重大學農學部學術報告 = The bulletin of the Faculty of Agriculture, Mie University},
 month = {Mar},
 note = {application/pdf, From a standpoint of transportation efficiency on forest roads, the author discusses speed difference　between on gravel surface roads and on asphalt paved roads with the theoretical value from a braking distance, and the results from a survey of the running speed at the down-grade section on forest road. To improve transportation efficiency, it is desirable to pave forest roads with asphalt not only at the gentle grade section but also at the steep grade section.},
 pages = {191--198},
 title = {林道の下り勾配部の路面状態と自動車速度},
 volume = {66},
 year = {1983}
}