Perceptions of Tilt Angles of an Agricultural Tractor

ABSTRACT A tractor stability simulator has been developed to help study tractor operators’ perceptions of angles when the simulator is tilted to the side. The simulator is a trailer-mounted tractor cab equipped with hydraulic lift that can tilt the tractor cabin up to 30 degrees. This paper summarizes data from 82 participants who sat in the simulator while it was tilted. Demographic variables, estimates of tilt angles, and measured tilt angles were collected. The effects of age, gender, tractor driving experience, and frequency of operation on the estimated and measured tilt angles were analyzed. The results showed that about 50% of the participants reported estimations of side tilt angles within ±5 degrees of the actual angles, and nearly the same percentage overestimated the actual side tilt angles. Only a small percentage underestimated the angles. Older, more experienced, and male participants set higher limits on the actual angle at which they felt uncomfortable and would not drive.

[1]  B Marlenga,et al.  Prevention of agricultural injuries: an evaluation of an education-based intervention , 2008, Injury Prevention.

[2]  Peter A. Hancock,et al.  The effect of in-vehicle warning systems on speed compliance in work zones , 2011 .

[3]  László Palkovics,et al.  Roll-over prevention system for commercial vehicles - additional sensorless function of the electronic brake system , 1999 .

[4]  Philip M. Garvey,et al.  Operator Interface for Tractor Rollover Mitigation System , 2007 .

[5]  Desa Ahmad,et al.  A Review of Farm Tractor Overturning Accidents and Safety , 2010 .

[6]  Egon-Christian von Glasner.  ACTIVE SAFETY OF COMMERCIAL VEHICLES , 1994 .

[7]  P M Garvey,et al.  Operator assessment of tractor roll angle with and without a tractor stability visual feedback device. , 2010, Journal of agricultural safety and health.

[8]  Tony Lower,et al.  Agricultural Health and Safety Performance in Australia , 2011, Journal of agromedicine.

[9]  Dennis J. Murphy,et al.  Tractors and Rollover Protection in the United States , 2010, Journal of agromedicine.

[10]  J H Goldberg,et al.  Operator limitations in farm tractor overturn recognition and response. , 1989, Applied ergonomics.

[11]  G. M. Owen,et al.  A survey of tractor overturning accidents in the United Kingdom , 1983 .

[12]  David Cebon,et al.  Design and implementation of an active roll control system for heavy vehicles , 2002 .

[13]  C I Nichol,et al.  Simplified overturn stability monitoring of agricultural tractors. , 2005, Journal of agricultural safety and health.

[14]  Noboru Noguchi,et al.  Stability criteria for tractor-implement operation on slopes , 1998 .

[15]  J R Wilkins,et al.  Protecting young workers in agriculture: participation in tractor certification training. , 2006, Journal of agricultural safety and health.

[16]  Lesley M. Day,et al.  TRACTOR RELATED FATALITIES FOLLOWING MANDATORY ROLLOVER PROTECTION STRUCTURE RETROFITTING IN VICTORIA, AUSTRALIA , 2012, Injury Prevention.

[17]  M L Myers,et al.  Cost effectiveness of a dealer’s intervention in retrofitting rollover protective structures , 2005, Injury Prevention.

[18]  M L Myers,et al.  Frequency and severity of injuries to operators during overturns of farm tractors. , 2006, Journal of agricultural safety and health.