The Arrival Control (commonly called the ATC) is situated at the end of a road section between stages and its purpose is to give the competitors an end time for completing the road section. At the ATC, competitors are issued with their stage start time which must be a minimum of (and usually is) 3 minutes after their ATC time. Generally an ATC control consists of 3 people. One person keeping a checksheet, one person writing on the timecards and one other who acts as a spare.
The start control is situated after the arrival control and marks the start of the special stage. One marshal keeps a checksheet of the times each car starts the stage, one marshal writes on the timecard and a third marshal gives the car a 30 seconds and 10 seconds verbal countdown and a 5,4,3,2,1 verbal and visual countdown to starting the stage. A fourth marshal is useful as spare.
The flying finish control marks the end of the special stage in terms of competitveness. As the car crosses the ‘finish’ the time is recorded by the flying finish on a checksheet and is relayed to the stop line to write on the competitors timecard.
The stop-line is situated around 200 metres after the flying finish and is where the timecards of the competitors are completed. Here, one marshal received the time from the flying finish and may also run a checksheet although its better if these 2 jobs are done by 2 marshals. A further marshal completes the competitors timecard with the information relayed to him or her.
A passage control serves 2 purposes on a special stage rally. The first is to ensure the competitors are following the correct route between the stages. The second is to collect timecards (or usually portions of timecards) and transfer (usually by telephone) these times to the rally HQ or results service. Its useful to have one person dealing with the competitors timecards and one person keeping a checksheet. A third person can then be used to communicate the field results back to the main results team.
The Service In control is very much like an ATC but no start time is nominated. Instead, the service interval allowed is sometimes written on the timecard and in other cases it may not be. Service In controls are often used as card collection points as well. The staffing requirements are similar to ATCs with one person dealing with timecards, one with a checksheet and a third as a spare or phoning back results.
The Service Out control gives the competitors a time for them leaving the service area. Its useful to have one marshal dealing with timecards, a second keeping a checksheet and a third as a spare.