Room Placement
The ideal
situation is to have a table top where all drivers and marshals can stand
around the table without blocking the view of the other participants and where
all corners are within easy arms length for resetting the cars. This is not
always practical, however. Sometimes, due to limited space, the track must go
up against one or more walls, thus limiting access. When wiring, keep the
driver stations apart or on opposite sides of the table. Consider your light
source as well. You may have to add an overhead light or lamp to make sure the
track is well lit. Also don't build a track so big that some parts are
unreachable!

Note, one problem with a wall layout such as Valleyview (above), is that
it's impossible to marshal some areas without blocking the other racer's view.