A new dummy-neck for rear-end collision testing has been developed and validated. The effectiveness of passenger car head-rests in rear-end collisions remains poor and whiplashinjuries, often occurring at low impact-speeds, are a great problem. Until now, there has been no acceptable dummy for rear-end impact testing. The new neck consists of seven cervical and two thoracic vertebrae connected with pin joints and is designed solely for rear-end collision-testing at low impact-speeds(<20km/h). It was validated with a series of volunteer tests and showed good accordance. A Hybrid III-neck was tested under the same conditions and proved to be too stiff and appeared to have too high resistance to horizontal translational motion between head and torso.