The actual locations of the timing lights & traps have changed a little, but the last few years have been the same.
Track 4:
Lights at Mile 1 & 2, one trap (1-2).
Track 3
Lights at Mile 1, 2 & 3 Plus 2-1/4, 3 traps (1-2), (2-2.25) & (2-3)
Tracks 1 & 2
Lights at Mile 1, 2, 3, 4, 5 plus 2.25 and 5(-132ft)
Traps (1-2), (2-2.25), (2-3), (3-4), (4-5) & (5-132ft-5)