In rallying, pacenotes are a commonly used method of accurately describing the route to be driven in extreme detail. As well as dictating the general route to be taken, in terms of turnings, junctions, etc, all notable features of the route which might affect the way it is driven at speed are included. These details include the distance between each feature, the degree and severity of bends, adverse camber, crests and Hill jumpings, surface type and conditions, potholes, special instructions to the driver, etc.

Example notes, distances in metres:
MC1 100 KL2 100 KR2 200 SQL 100 KR4 50J!->R2+ (D/C!) 100 +SQR 400 F->CR->KL4 100 MC2

Translation:
From Main Control 1 (start), 100 metres straight to a kink left, severity 2
100 metres, kink right severity 2
200 m, square left (90°)
100 m, kink right severity 4
50 m, Jump (caution!) into immediate right hand bend severity 2 tightens (caution, don't cut [the corner, due to hazard on the inside]!)
100 m, oversquare right
400 m, flat (maximum speed) into crest into kink left severity 4
100 m to Main Control 2 (finish)

This system uses numbers to describe the severity of bends, which is common, though others are used. Usually a 5-point scale is employed, with 1 being the gentlest of bends, with 5 being almost 90 degrees. The term "square" is used to indicate a genuinely 90 degree bend, and "oversquare" or "square plus" for even sharper. "Hairpin" is used for 180 degree bends or almost as much. Crews will agree a system such that the speed at which a bend can be safely negotiated is understood. A top rally driver will implicitly trust his co-driver, and be fully committed according to the information he is told. Naturally, good notes and good teamwork are essential for this approach to work.

Variations to this system may reverse the numbering system (1 being sharpest, 5 or 6 being slightest) and changing the scale to 6 points.
Unusual features such as a ford or grid might be written out in full, rather than in shorthand. Other symbols that are not strictly text are also used, such as a pair of narrowing lines to indicate that the route narrows. Crests and bridges are also often indicated symbolically.