  The ISO 26262 standard from 2016 represents the state of the art for a
safety-guided development of safety-critical electric/electronic vehicle
systems. These vehicle systems include advanced driver assistance systems and
vehicle guidance systems. The development process proposed in the ISO 26262
standard is based upon multiple V-models, and defines activities and work
products for each process step. In many of these process steps, scenario based
approaches can be applied to achieve the defined work products for the
development of automated driving functions. To accomplish the work products of
different process steps, scenarios have to focus on various aspects like a
human understandable notation or a description via time-space variables. This
leads to contradictory requirements regarding the level of detail and way of
notation for the representation of scenarios. In this paper, the authors
present requirements for the representation of scenarios in different process
steps defined by the ISO 26262 standard, propose a consistent terminology based
on prior publications for the identified levels of abstraction, and demonstrate
how scenarios can be systematically evolved along the phases of the development
process outlined in the ISO 26262 standard.
