Explanation of Swedish organizer notes

 

Edition: May 7 2024

 

Jemba's business concept is to develop and produce measurement systems for mobile applications.

The Swedish organizer notes, which are produced with Jemba Inertia Notes System, follows the definitions below. This measurement system has been developed and used in many parts of the world since 1997 and is the most advanced pacenotes tool available on the market. The system creates the notes from a detailed measurement of the curves of the road.

 

Based on this measurement, the maximum speed of a rallycar is calculated, assuming "normal conditions" prevail. On this basis, each curve is assigned a curve class. This is the basis of the notes.

 

Each curve class therefore represents a possible speed range.

 

This also means that it is up to each driver to decide according to his or her own ability what speed is right for each curve, taking into account his and the car's characteristics as well as the external circumstances in the form of, among other things, crests, road conditions and more.

 

An optimal setting of the system is to have an equal percentage speed difference between adjacent curve classes. This is not the case in this application as we have strived to correspond as much as possible with the manual subjective systems that have been used previously in Sweden.

 

The system does not try to manipulate the competitors by assigning a different curve class than the correct one.

Instead, the system strives to give the notes a constant assessment for all corners on all stages. Any additional information in the notes is provided to the same extent as in manual systems.

 


The basis of the system is the definitions of different curves.

 

A curve is primarily described by direction and curve class (referred to as "class").

The class is given after direction, except Hp and THp where it is indicated before.

 

A "+" after the curve means a slightly faster curve. A "-" after the curve means a slightly slower curve.

 

The following abbreviations are used:

 

Note
left

Note
right

Information

L6+

R6+

Fastest curve. Is just used for navigational purpose.

L6

R6

L5+

R5+

L5

R5

L5-

R5-

L4+

R4+

L4

R4

L4-

R4-

L3+

R3+

L3

R3

L3-

R3-

-

L2+

R2+

L2

R2

L2-

R2-

LOp1

ROp1

L/R Open one

L1+

R1+

L1

R1

L1-

R1-

HpL

HpR

Hairpin

THpL

THpR

Tight hairpin. Slowest curve.


 


 

Graphic description of curve classes and lengths

The drawn black curve represents the track of a car as seen from above, which starts in the lower left corner and follows the red field 4+. It ends in the section ˝Lg. It thus shows an R4+˝Lg.

 

Notgraf2GB.jpg

 


 

Length of curve

Information for length is given after its curve.

Information

Note

Length in meters is less than a normal curve in the specified class but at least the same total angle. NB! This means that the curve is slower than the normal curve with the same class, and the choice of line through the curve is therefore very important!

 

short

Normal length

 

Longer than normal

˝lg

Longer than ˝lg

lg

Longer than lg

Xlg

Extremely long or where it is extra important to know the length. The length is indicated by a "for" followed by the length in meters. Example obstructed view and a note like: L5for150>1

 

forxxx

 

 

Linked curves

Information for composite curve linking is given after the curve. Note that linked curves give a longer combined curve than the normal basic curve.

Information

Note

"Tightens". A complete curve with a certain class is linked to a slower curve with the same direction. The slower class is given if there is more than one difference in class such as: L6>4, which means that L6 continues directly with a L4 while L5> without class for > means L5>5-

 

> 

When the entrace of a curve consists of a very short section that almost instantly tightens, the input is not described, but only the main curve is described as "late"

late

"Opens". As > but with a faster class in the exit. Class is usually not specified

< 

When curves in the same direction follow each other quickly, they can be described using <>. Then class is given after >. Even after <, in rare cases, a class can be given. Sometimes, the length of an opening can also be given with an "in" followed by the length. Example of the highest complexity: R3<6for30>4

 

<> 

 

 

Straights/Distances

Distance is given in meters between objects. Straights are measured to/from the entrance/exit of a curve with the specified class or start/end of bridge and to/from the peak of the crest as seen from a distance.

 

The length of a crest, a curve or an opening between two curves can be given as inxx, e.g.: LgliKr for 80. If the view is obstructed, it may be interesting to know the length before a sharp tightening, e.g.: L6 for 330 >2.

 

The distance from the start of the stage is indicated on the left side of each row. From the same point, the distance to the finish of the stage is indicated in brackets on the line below.

 

Information

Note

0 – 10 m.

into

10 – 20 m. Is only given where it is critical.

10, 20

Distances are rounded into an even 10 meter between objects.

30, 40, 50, 60…

You will see through undefined curves over xxx meter.

kinks xxx


 

Warnings

Information

Note

Wake up. Usually no sign.

!

Double warning. There may be a sign.

!!

Tripple warning. There may be a sign.

!!!

 

Crest/jump

Information

Note

Small crest. Either 1: the road surface is not visible behind a smCr. Small or marginal impact on the car, or 2: /smCr is in a curve and has some effect on the road grip.

 

smCr

Crest. You usually can't see the road after the crest and this will affect the car's grip.

Cr

Big crest. The road drops steeply off on the back of a BigCr Great loss of traction.

BigCr

lg” before any of the crests means a long crest. The top of the crest "moves away a lot" as you approach it, without you seeing the road behind the top. PLEASE NOTE how measurements are taken here under "Straights/Distances".

 

lg

Sharp crest that can give a "kick".

kick

Askew crest. The road slopes transversly on the crest, so that the car's dynamics may be affected.

askCr

Small jump. The car will partially lose grip due to the crest.

smJmp

Jump. The car will lose a lot of grip due to the crest.

Jmp

Big jump You will most likely be air born.

BigJmp

The road surface may be uneven, for example, due to potholes or wheel tracks across the road, which may affect the handling of the vehicle.

Bmp

A depression in the road surface, which may.

dip

 

Other

To make it simple for beginners we use a consistent syntax, giving additional information for curves AFTER the curve.

Information

Note

Position is indicated by QR code.

Scan the code for stage start location and paste it into your navigation software to verify that the start location matches the start of the notes.

Commas are given as a suggestion for the co-driver to pause, so as not to read too far in advance. This prevents the driver from "losing sync".

 

,

Maybe the information is valid, depending on the speed (smJmp?), or if something may have changed after our last notes check (logs?).

?

Two pieces of something (e.g. 2*Cr).

2*

Bridge

][

Over. Used in combination with crests that start before the end of the curve and result in reduced grip through the corner.

Also used in combination with bridges and the like.

 

/

Junction. The distance from start to an intersection is usually given in the line below the note.

jct

A break in vegetation or terrain which may be deceptive

gap

Narrow

nar

Through

thru

Keep in at the exit of the curve.

k.i.

Drive outside of the curve, but ON the road (keep outside).

k.o.

Drive on the left side of the road (keep left).

k.L.

Drive in the middle of the road (keep middle).

k.m.

Drive on the right side of the road (keep right).

k.R.

Invisible road, or difficult terrain to interpret.

unseen

Radio control.

Stone or other obstacle in the inside of curve. Note this is given sparsingly.

s.i.

Stone or other obstacle in the outside of curve.

s.o.

(Hay-)bale inside.

b.i.

Information in parentheses is not primarily intended to be read by the co-driver. They are there to find the right position in the notes if you have lost your sync.

(xx)

Wrong camber of the road surface, i.e. the road surface slopes outwards in a curve.

       wc

 

In sketches, the position of a crest is marked with  > <.

769A

 


Sample for a printout

A speed profile is there to get an idea of the character of the stage and e.g. see if there are tempo changes.

Difficult combinations are underlined to indicate that they belong to the same combination.

Information in parentheses is secondary information, aimed to help a lost co-driver to synchronize. This is normally not called to the driver.

In order for the co-driver to find his way back in the notes after losing sync, numbers from the levels in the roadbook are printed to the right of the frame. It's easy to find your way there when a number sign appears along the road.

Sketches at scale can be inserted in the notes (with or without a 100 meter square frame) to clarify, as in the example below, where in the middle of a L5+>4 you should keep right in a junction.

In the lower left corner, a box with the notes from the top row of next page appears.

Stage number is printed on the right edge of each page with white text on a black background.

 

Printed notes may look like:

Exempelsida 1 GB.png

Exempelsida 2 GB.png