This project aims to study the possibilities of a modularized light weight design of an upper body structure, produced in a cost effective way that fulfils future demands in active safety (vision, vehicle dynamics) and passive safety. The project has focused on three areas; Improved vision, improved vehicle dynamics and modularized upper body structure. The reference car of this project has been a Volvo V50. All structural changes have been adjusted to fit surrounding structure. To increase the field of vision for the driver, the structure of the upper body pillars and surrounding components were optimize with regards to vision and passive safety. To evaluate the results two numerical (objective) and one subjective method were used. In both objective and subjective tests the projects solution show great improvement in the drivers vision field and perceptiveness compared to V50.