AB Dynamics explains a steer and counter-steer manoeuvre, which might be applied by a panicked driver avoiding an obstacle in the road. The fishhook test, which remains a requirement for all passenger vehicles sold in the USA, has a steering input defined in terms of angle against time. Maximum severity is achieved by triggering the counter-steer precisely when the maximum roll angle is reached following the initial steer input.
Fishhook / roll stability testing
By Rachel Evans
Rachel Evans
Rachel's career in journalism has seen her write for various titles at UKi Media & Events within automotive, tire and marine. Currently editor of ATTI, her favourite aspect of the job is interviewing industry experts, including researchers, scientists, engineers and technicians, and learning more about the groundbreaking technologies and innovations that are shaping the future of transportation.