# Is there a Take-off speed category?

ICAO Annex 14 recommends that "Runway centre line lights shall be provided on a runway intended to be used for take-off with an operating minimum of an RVR of the order of 400 m or higher when used by aeroplanes with a very high take-off speed, particularly where the width between the runway edge lights is greater than 50 m." (section 5.3.12.4).

I wish to know whether aircraft are categorized by take-off speed (like they are by approach speed), or which aircraft fall in the category of having very high take-off speed.

The term very high take-off speed does seem a little nebulous; airliners' takeoff speeds are pretty high compared with most General Aviation aircraft, and unless you're building a runway for fighter or experimental jets, there aren't that many aircraft with higher takeoff speeds than we have that it would seem worthwhile to install CL just for them.