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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166 
VIM
Page 87
If you've noticed an error in this article please click here to report it so we can fix it.
by Tim H oa re
Provided the categories and class were complementary when coupling a tractive unit and trailer, the driver could be certain that his cab would not be demolished at the first tight roundabout and that the combination dimensions would also satisfy any traffic examiner.
BRSL has incorporated the SMMT scheme on its fleet of 6000 tractive units and 10,000 trailers, hut the addition of colour-code system makes the matching much simpler.
Each category and class are allocated a colour (as shown in the accompanying tables). The term Phase 1 corresponds to Category B and Phase 2 to Category A of the SMMT scheme.
An Sin, coloured plastics disc is fitted to the right-hand top corner of the headboard of each trailer supplied to BRSL. Platform length and gross train weight are also painted on the disc. A small plate, 4in. long and 21n. wide, fitted to the inside of the tractive unit cab indicates, by colour, to which phase and class of trailer the unit may be.coupled.