SAE J1521-1998
Truck Driver Shin-Knee Position for Clutch and Accelerator

Standard No.

SAE J1521-1998

Release Date

1998

Published By

Society of Automotive Engineers (SAE)

Status

Withdraw

Replace By

SAE J1521-2009

Latest

SAE J1521-2014

Scope

This SAE Recommended Practice describes two-dimensional, 95th percentile truck driver, side view, seated shin-knee contours for both the accelerator operating leg and the clutch operating leg for horizontally adjustable seats. There is one contour for the clutch shin-knee and one contour for the accelerator shin-knee. There are three locating equations for each curve to accommodate male-to-female ratios of 50:50, 75:25 and 90:10 to 95:5.

SAE J1521-1998 history

• 2014 SAE J1521-2014 Truck Driver Shin-Knee Position for Clutch and Accelerator
• 2009 SAE J1521-2009 Truck Driver Shin-Knee Position for Clutch and Accelerator
• 1998 SAE J1521-1998 Truck Driver Shin-Knee Position for Clutch and Accelerator
• 1987 SAE J1521-1987 Truck Driver Shin-Knee Position for Clutch and Accelerator
• 1985 SAE J1521-1985 Truck Driver Shin-Knee Position for Clutch and Accelerator