English is helpful in journeys/when traveling/while traveling.

[Rachel Adams]

If I am saying that knowing English can be useful when a person is traveling, will all the three sentences work?

1. English is helpful in journeys.
2. English is helpful when traveling.
3. English is helpful while traveling.

 

[teechar]

#1 is no good; #3 is possible; #2 is correct and natural.

 

[Tarheel]

Say ‘Do all three sentences work?’