SAE J2945-3:2020 pdf free

SAE J2945-3:2020 pdf free.Requirements for Road Weather Applications
Section 2 defines the user needs that SAE J2945/3 addresses in subsequent sections. Accepted system engineering processes detail that requirements should only be developed to fulfill well-defined user needs, in terms of the operations and maintenance of the system. The first stage in this process is to identify the ways in which the V2I and I2V weather-related data are likely to be used. For SAE J2945/3, this includes identifying what weather-related data from mobile sources may be used, and how weather applications may use this data, along with data collected from other sources, to improve transportation safety, mobility, and the environment. These weather applications may exist at a traffic management center, on transportation field devices, on vehicles, on mobile devices, or weather data centers.
This section is intended to assist the first three categories of users in understanding how weather-related data from mobile sources, such as equipped vehicles or personal (VRU) devices, can be incorporated into a connected vehicle environment to support weather applications. For this audience, Section 2 serves as the starting point in the agency specification and procurement process. Users can become familiar with each feature addressed in SAE J2945/3 and determine whether or not a feature is appropriate for their agency-specific implementation. If a feature is appropriate, then an agency’s procurement specification should be structured to require support for the feature and all of the mandatory requirements related to that feature.
A concept of operations describes a proposed system from the users’ perspective. Typically, a concept of operations is used on a project to ensure that the system developers understand the users’ needs. Within the application standards, the concept of operations documents the purpose of each feature for which an application standard supports an application. The concept of operations also serves as the starting point for users to select those features that may be appropriate for a specific application.SAE J2945-3 pdf free download.