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- Title
- The position and postural attitudes of driver occupants, seat position
- Creator
- Reynolds, H. M. (Herbert M.)
- Date
- 1996-06-21
- Collection
- Ergonomics Research Laboratory Reports
- Description
-
Subjects representative of the mid-sized automobile market segment in the United States drove a four-door 1995 Chevrolet Lumina on three highway trips. We measured their posture, seat position, muscle activity, pressure distribution and comfort under highway driving conditions. Two identical vehicles were instrumented with video cameras to measure anatomical joint center positions (including H-point and D-point in the pelvis) in three-dimensional space, pressure distribution in the cushion...
Show moreSubjects representative of the mid-sized automobile market segment in the United States drove a four-door 1995 Chevrolet Lumina on three highway trips. We measured their posture, seat position, muscle activity, pressure distribution and comfort under highway driving conditions. Two identical vehicles were instrumented with video cameras to measure anatomical joint center positions (including H-point and D-point in the pelvis) in three-dimensional space, pressure distribution in the cushion and back, and an on-board PC equipped with an A-to-D board that was used to digitize signals from EMG electrodes on the driver's back and all seat position transducers. The seat was a six-way power seat with a power recline and a four-way lumbar support. A technician sat in the back seat operating all measurement equipment and conducting a brief comfort interview at prescribed intervals during the drive. The subjects, obtained from the general population in mid-Michigan, were selected to drive the vehicle without prejudice for halo or marketing effects. This report describes how these subjects used the 12-way power seat in the vehicle to achieve a comfortable or occupant-preferred seat position while operating the vehicle on the highway.
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- Title
- The initial position and postural attitudes of driver occupants : experimental protocol
- Creator
- Reynolds, H. M. (Herbert M.)
- Date
- 1995-05-25
- Collection
- Ergonomics Research Laboratory Reports
- Description
-
This report contains a description of all instrumentation, tools and procedures used in collecting data for an investigation of driver posture and comfort while operating a 1995 mid-sized vehicle and sitting in a seat buck. The investigation measured anatomical landmarks in three-dimensional space that are used to characterize seated posture with a video anthropometric system installed in the vehicle and a seat buck. It has combined these data with pressure measurements to completely define...
Show moreThis report contains a description of all instrumentation, tools and procedures used in collecting data for an investigation of driver posture and comfort while operating a 1995 mid-sized vehicle and sitting in a seat buck. The investigation measured anatomical landmarks in three-dimensional space that are used to characterize seated posture with a video anthropometric system installed in the vehicle and a seat buck. It has combined these data with pressure measurements to completely define the position of the pelvis (Hpt and Dpt) while the driver is operating a vehicle on the highway. It also took standard anthropometric measurements of each of 102 subjects as well as specialized geometric data on the orientation of the chest and pelvis while measuring the position of the dorsal spines of the vertebrae in the spinal column. Each subject sat in five postures for these measurements of the spinal column. These data will be developed into a model of the human spinal column for seated postures. In addition, measurements were made of each subject while operating the vehicle as well as questionnaires that were used to investigate comfort of the driver.
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