Steering Control Systems - Laboratory Test Procedure Heavy Trucks
This SAE Recommended Practice describes a laboratory test procedure for evaluating the characteristics of heavy truck steering control systems under simulated driver impact conditions. The test procedure employs a torso-shaped body block that is impacted against the steering wheel.
Rationale: The UMTRI report to NHTSA indicates that the steering wheel is the predominant source of injury in heavy truck collisions for both belted and unbelted drivers. Unlike light vehicles, heavy commercial vehicles must balance the need between energy absorption with the strength and utility of a grab handle for vehicle entry and egress. The purpose of this project is to review and potentially update the standard for crashworthiness improvements while maintaining utility.