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 
TfL to trial advanced satellite toll system
Page 14
If you've noticed an error in this article please click here to report it so we can fix it.
• by Guy Sheppard London's transport managers want to test a more advanced road tolling system followng the successful launch of congestion Charging in February.
Transport for London (Tfl) says replacing its existing camera-based system with satellite tracking would offer greater flexibility. Although it refuses to discuss how this would affect tolls, one option would be to vary them according to the time of day Or how much traffic is on individual routes.
"We said we would have liked to have gone along with the next generation of technology, but that has not yet been approved by government. Clearly, there are advantages in terms of having more 'flexibility about the type of journey you record."
However, he says there are no immediate plans to replace the existing system which is covered by a contract lasting at least seven years.
A spokesman for the Department for Transport says the Leeds trial will examine how gantries across reads can measure traffic flow and how a satellite and in-cab box can communicate with each other.
"ft is important to get right where a vehicle is travelling, a log of its journey and then pass on the right billing details.'
He adds: "We are trying to get an electronic billing system rather than a laborious postal one."