There are 3 pounds classes W1, W2 and W3. There are visual performance requirements for Daylight appearance of both internal and external non-reflective and reflective surfaces.
For reflective sheeting, there are four classes of reflective. Functionality, this allows for different retroreflective.Technology to be used R2A, R1B and R2B. The Main difference being. That retroreflective performance classification has been transposed.  Performance Requirement of retroreflective surfaces in moist Conditions also applies of 70 percent of any one of the above classes.

Following is the retroreflective value datasheet. XW7200 and XW1300 has compliance with en13422:2004