Not to make things more complicated than they need to be but I am wondering if you would consider putting some type of parameter on the "Light must be mounted and functional when machine is presented for technical inspection." ruling. For example - Light must be mounted and functional when machine is presented for technical inspection when the current weather conditions or forecast would indicate that the probability of use will be required for any portion of a practice or race day. For the purposes of this section the probability of use will be determined as the current weather forecast indicating a greater than 40% chance of precipitation for the given period on the Wed prior to a race weekend.

I know that opens up a can a worms but seems like a pre grid check would be sufficient when there is not much threat if any chance of rain.

Just an idea