@ iFly738
But how do I know when the lights are 30m apart?
The Runway Layout diagrams in Jeppesen show the approach light drawn in black bars over the white background, and white bars over the black runway background. They are all standard 30m apart down to the landing threshold. The Landing data shows the spacing of the runway lights for the Landing Roll.
@ RAT 5
While you say the light before the threshold are technically approach lights, they are also takeoff lights if full length is approved. In that case why would they not be the same as the rest of the rwy?
If all the runway centre line lights for the full length including up to the inset landing threshold were 15m apart, how do you propose to turn off half of them off for Landing Traffic and back on again for departing traffic?
Next time you line up on a runway at night - have a look out of the window.