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A traffic survey conducted on a road yields an average daily traffic count of 5000 vehicles. The axle load distribution on the same road is given in the following table.
The design period of the road is 15 years, the yearly traffic growth rate is 7.5% and the load safety factor (LSF) is 1.3. If the vehicle damage factor (VDF) is calculated from the above data, the design traffic (in million standard axle load, MSA) is __________.
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- 307 to 310
- 307
- 310
- None of the above
Correct Option: A
Vehicle damage factor (VDF)
| VDF = V1 |  |  | 4 | + V2 | | | 4 | + V3 | | | 4 | + V4 | | | 4 | + V5 | | | 4 | ||||||
| Ws | Ws | Ws | Ws | Ws |
V1 + V2 + V3 + V4 + V5
Ws = Standard axle load = 80 kW = 8.2 tonnes VDF
= 4.98
| Axle load = | × VDF × F.S | |
| γ |
| = | 365 × 5000 × |  | | 1 + | | 15 | - 1 |  | × 4.98 × 1.3 = 308.59 | |
| 100 | ||||||||||
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| 100 | ||||||||||
