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 
Wanted: seven-day tachographs with fiddle-proof mechanism
Page 37
If you've noticed an error in this article please click here to report it so we can fix it.
• A draft specification for tachographs to record time, speed and distance on goods vehicles covered by "quality licensing" and p.s.v. carrying more than 12 passengers, has been circulated by the Ministry of Transport to manufacturers, associations and trade .unions. In circulating the draft, the Ministry stresses that the introduction of the requirement for such vehicles to be fitted with these recording devices will depend on the bringing into force of the other Transport Bill provisions relating to drivers' hours.
The specification requires the recorder to provide a legible record of the period of time during which the vehicle has been driven (the time during which the engine has been running); the road speed of the vehicle; and the distance covered by the vehicle. It has to be capable of providing a continuous record for periods of up to seven days without the need to re-load or re-energize the instrument.
The record which the tachograph makes must be removable and have built-in means for recording the details of the vehicle to which it applies, together with a date or dates, and for identifying the driver and/or drivers who have driven the vehicle during the
relevant period. The record has to remain legible for at least 12 months.
The Ministry wants the device to permit separate recording of the driving periods of at least two different drivers on the one record—with identification by the driver of his own period of driving by the use of a personal key or similar device. But there does not have to be a separate recording medium for each driver.
Accuracy must be within plus or minus five minutes in 24 hours, plus or minus five per cent on a speed range from 0 to 75 mph and within plus or minus three miles, or five per cent of actual distance, on total mileage covered in 24 hours.
The instrument must be capable of fitment to all classes of vehicle affected and must prevent unauthorized access to the record and the internal mechanism, while the mechanism for providing the driving-time record must not be dependent upon "any external driving shaft or fitment attached to the instrument". The device and its installation fitments must be made so as to reduce the chance of unnoticed interference, while the record, too, must conform with similar anti-tampering requirements.
It will not be obligatory to include an elapsed time indicator, to give the driver visible indication of driving time, nor need it indicate speed; but both these features may be included if so desired. To allow for a future change to metric measurements, the record and/or the instrument must be easily and cheaply convertible to provide metric speed and distance readings.
The requirements for tachographs are set out in Clause 116 of the Transport Bill.