A flexible pavement has the following class of loads during a particular hour of the day.

1. $80$ buses with $2$- axles ( each axle load of $40 \: kN$)
2. $160$ trucks with $2$-axles (front and rear axle loads of $40 \: kN$ and $80 \: kN$, respectively)

The equivalent standard axle load repetitions for this vehicle combination as per $IRC:37-2012$ would be

1. $180$
2. $240$
3. $250$
4. $320$
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