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Subpar-dad t1_izbgeiq wrote

Reply to comment by CT_Patriot in Traffic paint on major roads disappearing when it rains. by Gem_carver

ConnDOT doesn’t spec thermoplastic for highways. Atleast I don’t see it in the form 818 which is ConDOTs standards on construction materials. It’s usually waterborne, hot applied waterborne or epoxy resin. Epoxy resin has the highest level of wet night reflectivity and lasts 3-5 years as opposed to thermoplastic which is only 2-4 and has medium level wet night reflectivity.

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mkt853 t1_izbnjmh wrote

Yeah I was gonna say I've never seen it either. The final installation is usually just paint that's grooved in i.e. milled lines that have the paint laid in them to increase longevity.

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Subpar-dad t1_ize5s2t wrote

After talking to a senior engineer at my firm he said ConnDOT use to use thermoplastic years ago but they have since moved on to epoxy resin.

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CT_Patriot t1_izbnoz2 wrote

Most likely the resin type. Whatever Safety Marking uses on roadways.

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Subpar-dad t1_ize6162 wrote

They sometimes still use thermoplastic for city and town municipalities just not on highways any longer!

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