42. Category Descriptions Covers the engineering management of a design group consisting of a number of design teams engaged on separate projects or discrete parts of a larger project Signalling Design Manager 1.1.145 The holding of at least one of the signalling design licenses (1.1.150 A, B, C, D or E) relevant to the design to be verified is a pre-requisite for this license Covers the role of anyone who performs independent checks of another person’s design work. Signalling Design Verifier 1.1.160 Covers the role of anyone who performs data preparation for safety critical parts of signalling systems, where an understanding of signalling principles is required, e.g. for software-based interlocking. Signalling Principles Data Designer 1.1.150E Covers the role of anyone who produces wiring design details that requires understanding of signalling principles, e.g. for relay interlocking. Signalling Principles Designer 1.1.150D Covers the role of anyone who produces design details for signalling systems that use standard circuits, data constructs and other standard designs, where knowledge of signalling principles is not required. Signalling Designer 1.1.150C Covers the role of anyone who produces application designs for systems such as electronic signalling control and display systems, train describers, hot box detectors, CCTV for level crossings, panel multiplexers, safety-related data transmission links etc. Signalling Electronic Systems Designer 1.1.150B Covers the role of anyone who produces scheme design documents such as scheme plans, control tables, aspect sequence charts, outline project specifications etc. Signalling Schemes Designer 1.1.150A Covers the role of anyone who assists with signalling design work under the direction of a licensed designer. Assistant Signalling Designer 1.1.100 Category Description license Category Name Code