Effectiveness

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Table 3: Effectiveness ratings. Whole database to 02/04/2001

Effectiveness rating

Number of Schemes

Average Cost

1

145

76657

2

133

14845

3

134

24226

4

64

11338

5

84

11805
Following an evaluation period (typically 3 years) each Local Authority is asked to evaluate the effectiveness of the scheme. The effectiveness rating ranges from 1 (very effective) to 5 (not at all effective). The table above shows that most schemes are rated positively. The table is limited to schemes where the cost of the scheme is known.

Table 4: Effectiveness ratings with treatment types used. Whole database to 02/04/2001

 

Treatment
Total Number
Effectiveness
 rating         1 
 
2
 
3
 
4
 
5
Average Effectiveness rating

1

Signalised Junction

68

20

22

9

8

9

2.47

    New signals

21

9

4

3

1

4

2.38

2

Roundabout

92

29

22

24

5

12

2.45

   New mini

42

13

8

15

1

5

2.45

3

   Priority Junction

150

28

39

41

15

26

2.79

   Specified Other

29

12

6

4

1

5

2.24

   Geometric        Improvement

21

5

9

4

2

1

2.29

Signing

66

3

16

24

9

14

3.23

4

Bend

107

27

21

34

7

17

2.65

   Warning signs

49

6

11

21

3

7

2.82

5

Pedestrian Facility

93

14

23

16

20

19

3.04

   New Pelican

29

7

5

6

6

5

2.90

   Refuges

29

1

6

6

7

8

3.41

6

Cycle schemes

2

-

2

-

-

-

2.00

7

Link

266

68

77

51

37

28

2.49

   Road humps

37

17

10

7

1

-

1.68

   Carriageway marks

33

4

13

7

5

4

2.76

   Signing

21

5

7

4

5

-

2.43

8

Route

17

4

5

5

1

2

2.53

9

Area wide

20

2

17

-

1

-

2.00

The table above covers all schemes where an effectiveness rating has been supplied. Here the treatment types within each scheme have been analysed. (It should be noted that there can be many treatment types within a scheme.) The table shows the effectiveness ratings for main treatment categories such as Pedestrian facilities, and treatment sub-groups such as new pelican and refuges. In the case of treatment sub-groups, the information has only been presented if there are at least 20 examples. Therefore, the sub-groups shown are the most popular types of treatment where an effectiveness rating has been given. The smaller the Average Effectiveness rating the better. Information was only available on 2 cycle schemes. These are included for completeness.

Every possible care has been taken to ensure that the information presented on this page is accurate. TRL Limited regret that they cannot accept any responsibility for loss caused by error or omission.

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