We replaced our steps down to the clothesline from a ramp a few years ago with treated pine, painted them to match the other timber work and added those yellow non-slip strips which look like sandpaper to the edge of each one. The timber now has big cracks in it and the strips are peeling off. I have recently seen some material on some council works on steps and was wondering what this is called and where you can purchase it from. hopefully someone can help.
Sideways view seems to have the white edges already attached.
Apologies for the delay in responding. The ever-helpful @MitchellMc is taking a well-earned break at the moment and will be back in a week. I will ask him to assist you with some options. Hopefully other helpful members will also have suggestions for you in the meantime.
I'm not aware of us supplying such a stair tread. Perhaps you might like to contact your local council to find out more information about them. However, we have Brutus 1.2m Anti Slip Stairtread Nosing which would be much more durable than the tape options.