A : It takes me ( about 30 minutes) and it takes longer when the trafic is jammed
B: how long does it take you to get to ( place ) from ( place ) ?
A: I get stuck in a trafic jam ( once or twice a week)
B: how often do you get stuck in a traffic jam?
A: I often get stuck in a trafic jam ( on Monday morning)
B: when do you often get stuck in a traffic jam?