The simulations for the dealership were used, on the one hand, to review the lighting concept and, on the other, for a realistic presentation of the design to the client. The scope of the simulations included the calculation of illuminance and luminance levels for the vehicles, walls and workspaces to analyse critical luminance contrasts and to evaluate the avoidance of glare. In contrast to the exclusive use of technical drawings with ground plan and section, the visualisations gave those involved in the planning process a better spatial picture of the lighting solution.