The mole road map provides a visual guide for converting between different units related to the mole concept. It shows that 1 mole of particles is equal to 6.02 x 10^23 representative particles, 1 mole of a substance has a mass in grams equal to its atomic or molecular mass, and 1 mole of gas occupies 22.4 liters at STP. The road map can be used to determine the conversion steps needed when going from any starting point, such as number of particles or mass, to any desired final unit, such as volume or moles.