Note that a false rail has been used on the straight at Windsor for at least the last 6 years.
The false rail is used to split the straight approximately in half, and races then use either half of the course to relive wear of the turf.
The side of the course to be used is usually decided during the week prior to racing.  The stalls are mostly positioned High throughout, on both halves of the course.
Information by courtesy of The Clerk Of The Course 13 Apr 2006.

The use of a false rail could be a contributory factor towards spreads of results, so it may be unwise to read too much into these stats.
If we ever get an indication of false rail usage in results returns, it will be possible to produce more accurate stats.
At present with stalls High, we are looking at results of races started with the stalls next to the stands' rail, and in the Centre of the course, next to the stands' side false running rail.

Horse racing draw advantage bias WINDSOR 5F
Stalls usually positioned HIGH ( Low are shown L )

Link to course and distance menu

WINNING STALL NUMBER

 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
No

of

R

U

N

E

R

S

8     1 11   1 1  
9 11 1     1 1      
10     1             111
11           11 1 1 1   1
12   1        1            1
13            1 11   1        
14 1 11    1    11           1 1  
15    1      1       11     1 1   L
16   1         1       1     1 1 11
17           11         L1 1     1   1
18                               1 1  
19                                      
20       1 1                   1     1   1
21                             1            
22                                            
23                                         1    
24                                                
25 1                                             1  
2 5 2 4 1 6

<--Good or better -->

4 3 2 7 2 7
18 24

Copyright 2005 [H Hutchinson]. All rights reserved.

Until the 2005 results were added, there was a good pattern that favoured the Top 3 stalls on good or better going, in races of 15 or more runners., but 2005 and 2006 results didn't continue that trend.

On good or better going the Top half of the draw won 24 of 45 races 53%.
The Bottom half won 18 of 45 races.
3 other winners were drawn dead centre.
Any advantage in these races has been only marginal in the long term, and the false rail cannot be helping this pattern.
Runners will be continually using different parts of the track, and at present false rails are not recorded in race returns, leaving us very much in the dark.
There is no recommendation.

On good, good-soft in places or softer going, results are spread across a wide range of stall numbers.

2006 results :- 3-8. 6-8, 5-10, 9-13, 2-14, 4-14, 7-16

2005 results :-   4-8, 8-11, 6-14, 2-15, 9-15, 2-16,