The purpose of riding in an organized group instead of an undisciplined pack is to provide the additional safety that a well-organized group inherently generates. This comes from within the group and from the outside. When a group rides in an orderly fashion, people don't get in each other's way, and the organization of the formation itself discourages cars from attempting to cut in.
The following rules are compiled from a number of sources and are considered standard rules-of-thumb. Most clubs that ride in orderly formations follow similar rules.
Formation
Group riding will follow Idaho State Law. Riding will be in a standard staggered formation unless the leader calls for single file. In staggered formation, the bikes form two columns, with the leader riding in the left side of the lane. The second rider will fall into the right side of the lane approximately 1 second behind the leader. The third rider will take the position 2 seconds directly behind the leader, which puts them 1 second behind the rider in front of them in the right side of the lane. The rest will follow as such. This formation keeps the group close and permits each rider a safe distance from the others ahead, behind, and to the sides. It also discourages traffic from breaking into the formation. A close group takes up less space on the road, is easier to see and is less likely to be separated. The last rider in the group, or "tail gunner", brings up the rear and may ride on whichever side of the lane he prefers, helping the "ride leader" discourage traffic from cutting into the formation and keeping the group together.
Emergencies
In the unlikely event of an emergency condition, the "ride leader" will make every attempt to move the formation to the shoulder in an orderly manner. If a bike breaks down, let the rider move to the right. DO NOT STOP. The "tail gunner" will stop with the problem bike. The "ride leader" will lead the group to a safe stopping place.
New Riders
The position of new or riders inexperienced with group riding is very important. New riders should be positioned towards the front of the formation to follow those that are experienced in group riding and so that other experienced riders can watch them from behind.
Ride Leader
The "ride leader" is responsible for the safety of the entire formation. He/She must be aware of the length of the columns, and must gauge the passing of merges, highway entrances and exits, etc., to allow for maximum safety and keeping the group together. He/She must make sure that he/she leaves enough time/space for the formation to get into the appropriate lanes before exits, etc. All directions come from the "rider leader". Coordinating with the "tail gunner", if a radio is available, the "ride leader" makes all decisions regarding lane changes, stopping for breaks and fuel, closing of gaps, turning off at exits, any concerns of what lies ahead, and so on. NO individual will assert himself independently without direction from the "ride leader" to do so.
Tail Gunner
The "tail gunner" serves as the eyes of the "ride leader". He watches the formation, and informs the "ride leader" of any potential problems within the group. He watches other vehicles, and informs the "ride leader" (via radio) of hazardous conditions approaching from the rear, such as vehicles trying to cut into the formation and trucks passing with potentially dangerous wind blasts. He will watch for merging lanes, and will move into a merging lane (or stay in a merging lane just vacated by the group) in order to "close the door"; on other vehicles that may otherwise find themselves trying to merge into the formation. Working with the "ride leader" the "tail gunner" will set the pace for the group. At the "ride leader's" request, the "tail gunner" changes lanes before the formation, to secure the lane so the formation can move into it.
Hand Signals
Each rider and passenger should duplicate all hand signals given by the rider in front of him, so that the signals get passed all the way to the back of the formation. The following signals are used in addition to the standard (right turn, left turn, slow/stop) hand signals.
Lane Changes
All lane changing starts with a radio request from the "ride leader" to the "tail gunner". The "tail gunner" will (when it is safe to do so) move into the requested lane and will inform the "ride leader" when the lane is clear. The "ride leader" will make the call if no radio is available. At this point, the "ride leader" has three options: