The Highways Agency reviews traffic flow data on a monthly basis which is collected by Severn River Crossing plc, the operator for the crossings.
The Highways Agency holds traffic data broken down into hourly, daily and monthly flows for westbound traffic on the Severn crossings.
Vehicle numbers are counted in the westbound direction as part of the toll collection, which is in that direction only. The average numbers of westbound vehicles using the Severn crossings during 2009 for each hour of the day are given in the following table:
Time Vehicle flows 00:00-01:00 344 01:00-02:00 240 02:00-03:00 200 03:00-04:00 180 04:00-05:00 214 05:00-06:00 365 06:00-07:00 841 07:00-08:00 1,663 08:00-09:00 1,891 09:00-10:00 1,864 10:00-11:00 1,958 11:00-12:00 2,140 12:00-13:00 2,269 13:00-14:00 2,356 14:00-15:00 2,478 15:00-16:00 2,776 16:00-17:00 3,384 17:00-18:00 3,555 18:00-19:00 2,867 19:00-20:00 1,821 20:00-21:00 1,345 21:00-22:00 1,004 22:00-23:00 757 23:00-24:00 530 Total 37,042
Vehicle numbers are counted in the westbound direction as part of the toll collection, which is in that direction only. The average hourly flows of vehicles in each charging category travelling westbound during 2009 across the Severn crossings are detailed in the following table.
Time Class1 (£5.50) Class2 (£10.90) Class3 (£16.40) Exempt 00:00-01:00 242 20 80 3 01:00-02:00 136 18 83 3 02:00-03:00 93 17 88 2 03:00-04:00 70 19 89 1 04:00-05:00 78 23 110 2 05:00-06:00 133 51 177 4 06:00-07:00 421 156 257 7 07:00-08:00 1,101 285 260 16 08:00-09:00 1,401 238 237 15 09:00-10:00 1,416 201 233 14 10:00-11:00 1,519 189 232 18 11:00-12:00 1,694 193 236 19 12:00-13:00 1,795 206 246 22 13:00-14:00 1,857 227 249 23 14:00-15:00 1,952 254 247 26 15:00-16:00 2,221 295 228 31 16:00-17:00 2,807 329 202 47 17:00-18:00 3,087 250 167 52 18:00-19:00 2,525 164 142 36 19:00-20:00 1,573 106 122 20 20:00-21:00 1,147 77 109 12 21:00-22:00 836 54 104 10 22:00-23:00 618 39 93 7 23:00-24:00 415 27 84 3 Total 29,137 3,438 4,075 393