When an ordinary motor vehicle approaches an intersection where the rightmost lane is a dedicated bus lane marked with dashed yellow lines near the intersection, under what condition may the vehicle enter the bus lane?

1. To park temporarily and wait for passengers for up to 10 minutes
2. To overtake slower vehicles from the right and accelerate straight through the intersection
3. Only to make a right turn, entering smoothly through the dashed line section without obstructing transit buses
4. To conduct a U-turn across all lanes