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Distance driven and driving speed when forwarding during final felling in Central Sweden

Author

Listed:
  • Simon Berg

    (Department of Forest Biomaterials and Technology, Faculty of Forest Science, Swedish University of Agricultural Sciences, Umeå, Sweden)

  • Back Tomas Ersson

    (School of Forest Management, Faculty of Forest Science, Swedish University of Agricultural Sciences, Skinnskatteberg, Sweden)

  • Jussi Manner

    (Skogforsk, Uppsala, Sweden)

Abstract

Factors affecting forwarding work are interesting because they can be used to better optimize forwarding routes and to predict costs. The main objective of this study was to investigate the association between driving speed and driving distance when forwarding. Data was automatically collected during 2.5 years from two large forwarders operating during final felling in central Sweden. Driving speeds for the work tasks Driving unloaded, Loading drive and Driving loaded were analysed using correlation, least-squares regression, and quantile regression. The results showed that speed and distance were strongly correlated for the work element Driving unloaded, while the correlation was weaker for Loading drive and Driving loaded. Possible factors leading to these results are as follows: longer travelling distances stimulate better planning and the establishment of better extraction roads; operators may feel stressed and drive faster as travelling distance increases; and finally, the relative influence of accelerations and decelerations decreases with increasing driving distance. Also, the use of quantile regression was successful and provided information that normal least-squares regression does not provide.

Suggested Citation

  • Simon Berg & Back Tomas Ersson & Jussi Manner, 2019. "Distance driven and driving speed when forwarding during final felling in Central Sweden," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 65(5), pages 183-194.
    • Handle: RePEc:caa:jnljfs:v:65:y:2019:i:5:id:23-2019-jfs
    DOI: 10.17221/23/2019-JFS
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    References listed on IDEAS

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    1. Martin STRANDGARD & Rick MITCHELL & Mauricio ACUNA, 2017. "Time consumption and productivity of a forwarder operating on a slope in a cut-to-length harvest system in a Pinus radiata D. Don pine plantation," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 63(7), pages 324-330.
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    Cited by:

    1. Simon Berg, 2023. "Simulating differences between forwarding short and normal-length timber," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 69(11), pages 485-496.
    2. Jussi Manner & Back Tomas Ersson, 2023. "A pilot study of continuous cover forestry in boreal forests: Do remaining trees affect forwarder productivity?," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 69(7), pages 317-323.

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