Signal provides a new, rail specific, innovative approach and user experience combined with the depth of functionality required for rail, construction and plant. The cloud-based solution enables clients, contractors, plant operators and staffing agencies to automatically plan worker shifts, calculate compliant fatigue, control exceedances, apply working regulation safety rules, issue digital timesheets and manage competencies. Signal is the official software used by National Rail, Morson and Murphy to calculate worker fatigue, ensuring industry compliance.