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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186 
Digitachs' wide margin of error
Page 28
If you've noticed an error in this article please click here to report it so we can fix it.
TIM RIDYARD raises some uncomfortable points in his article on digitach enforcement (CM 22 Februaiy).
He refers to the fact that where two movements are separated by less than two minutes, they are joined. A driver in a queue at a container terminal or a feed mill, shuffling forward a length or so at a time, will have his driving time wildly exaggerated.
I have been warning Cirrus's customers for some time that recorded driving time will be increased as a result of the limitations of the instrument itself.
lam disturbed to read that drivers are being asked to sign agreements that the recordings are correct. How would a driver know, unless he kept recordings of his own? He did not make the instrument, nor did he calibrate it, so he is not in a position to know whether the recordings are correct or not.
A driver should refuse to sign on those grounds.
When signing off, there is an opportunity to correct mistakes —but again, how can a driver possibly know that the readings are accurate to the last minute, as he would need to if infringements are implied by the records? The readings may be approximately right but a couple of minutes can make the difference between legality and infringement.
Drivers are going to have to give themselves much wider margins of safety if they are to avoid being convicted for infringements that have not been committed.
Ralph Ingham-Johnson Cirrus Fleet Services