The Preprimary Traffic Safety Curriculum (PTSC) Demonstration Project is a three year project to develop, pilot test, and disseminate a traffic safety curriculum for young children. The PTSC Project has two general goals: to develop appropriate safety habits and attitudes in children, and to establish cooperation between home and school so that teachers and parents can work together for the safety of young children. During the 1978-79 school year, a multitude of teacher and parent materials were developed and reviewed by an advisory committee. During 1979-80, a subset of these materials were field tested. A selected sample of 95 classrooms from 28 school districts participated in the field test. Teacher, principal, and parent questionnaires were used in the process and product evaluations to determine the level of use of the materials, the effectiveness of inservice programs, teacher perceptions of the materials, and teacher and percent ratings of the post-program behavior of participating students. Participating students performed significantly better than non-participants on the following objectives: listens for approaching cars, watches for cars by looking all ways and finger scanning, follows passenger safety rules by buckling seat belt, and recognizes the common traffic signs. (BW)