[Bongle]

Edit: The answer has been found. The lane divider is transparent to IR signals.

This came up in the IR-interference thread while I was thinking about how much opponent-caused interference a team might expect.

If IR signals cannot pass through the material the lane divider is made of, then you will be fairly protected from opposing team's signals at the start of the match. On the other hand, robots would have to be completely autonomous once they go behind it from the robo-coaches perspective.

So can anyone out there do a test with a remote, IR board, and a sample of whatever material the lane divider is primarily made out of?

Hmmm... the rulebook doesn't seem to give a specific material: "The openings in the railing panels are filled with clear plastic to prevent portions of ROBOTS from inadvertently passing through the structure."

Research as I go:
If it is polycarbonate and the remotes transmit with a wavelength that isn't around 1660nm (HowStuffWorks indicates that a typical remote transmits at ~800-900nm), then it seems it would be fully transparent and cross-field IR communication will be possible.