Imron Fleet Line Traffic 2K PU Topcoat is a non-VOC compliant two-component topcoat from Imron Fleet Line. Imron Traffic TR530, is a medium solids, two-component, polyurethane topcoat binder, ideal for large surface applications. Imron Fleet Line Traffic Topcoat is suitable for non-VOC regulated markets, delivering excellent results and productivity. The answer to commercial vehicle refinishing, medium solids topcoat for large surface applications.