@mrbarricade: I've been explaining construction verification to the public and cat tracking markings are where they see how engineers quality-check infrastructure. We always have to plan for both vehicle traffic and bicycle safety so sometimes we have to plan for mixing zones. These are cat tracking markings so a civil engineer can check to see if their design plans are being constructed properly. This is what I tell the public: infrastructure quality matters. When you design a mixing zone, you have to verify it gets built right. Cat tracking markings are temporary layout lines that engineers put down. They follow the path that designers intended. Before the final paint goes down, the engineer walks the design and checks: is this being built according to plan? Are the transition angles right? Is the storage space correct? Are the sightlines clear? These temporary markings are quality control. This is how I explain it: good infrastructure requires oversight. Engineers don't just design once and hope contractors get it right. We verify. We check. We walk the streets. Cat tracking markings are one tool. They're verification that construction matches design. This is infrastructure made for the public to understand: quality matters. Your engineer cares whether the design gets built right. These temporary markings prove it. #UrbanPlanning #Transportation #Infrastructure #CivicEducation #CivilEngineering #TrafficEngineering #QualityAssurance #ConstructionOversight
