Putting functinal lights on the robot

[linkhyrule5]

Heya,

We (1072 programming) team came up with the idea of putting a light on the robot in order to make reflective surfaces (such as the final pole) easier to "see." This year's rules do not explicitly ban lights, but it usually is banned, so we're double-checking with the experts.

So, to summarize: are functional lights - penlight to flashlight level - allowed on the robot? We're not using strobes or million-candlepower things either.