The OP's question was on road stripes specifically - not reflectors.
And being more specific, in areas where the road is plowed on a regular basis, reflectors built into the road have a difficult life. The ones that are more snowplow durable tend to cost more to install, require more preparation of the pavement, and when they come loose from the pavement turn into 2 to 5 lb loose objects in the roadway made of cast iron or hard plastic - and can cause serious damage to a vehicle when they get kicked up... The other ones don't fare very well when the plows come out.
Fun facts - there is no federal requirement to use reflectors. Part of why their use varies so greatly geographically.
I can state we use a variety of products - latex paint, epoxy, preformed thermoplastics, and polymer tape. More or less more expensive as you go down the list. The last two are used mostly in spot high traffic areas (think intersections) and the thermoplastics for things like markers for turning movements, etc...
The more expensive Epoxy tends to get used when roads are new, and the higher priority the road, the more likely to be used. As the road weathers and deteriorates, it shifts to using a latex paint since it isn't being applied to the most solid of surfaces.
Similarly, the higher the priority of the road, the more likely the markings will be kept in higher functioning condition - ie: your local City street or minor county road is likely to get the cheap latex paint markings, and have them done on a longer period. The county I used to work at had a goal to paint the striping yearly, and all other symbols and markers every three years. Reality was nothing went more than 2 years... But a lot of it went 2 years.