1.​ One of the first design features they have is a “slight recess” which is especially helpful
in the winter time to prevent snow plows from ripping them out of the asphalt. They are
also UV stable which is important since they are under the sun most days. Additionally
they use a material that can withstand the environmental conditions they will face.
2.​ The material is high density polyethylene is a thermoplastic that consists of linear chains.
Such a structure makes it semi crystalline which gives it high strength and ability to
withstand harsh conditions like the ones these markers are used in. High density
polyethylene is also used in applications like plastic pipes for the same reasons it is good
for the markers. It is also used for plastic bottles like milk containers and shampoo
bottles for its ease of use to mold into odd shapes and since it is food safe.
3.​ The article did not go into much depth about the economic savings such a small solution
like this could cause. With so many of these repairs being done this makes it easier to
track while also keeping cost low.