Traveler who prays ‘ishaa’ prayer need not re-pray it upon returning home

Commuting between cities of work and residence

Prayer of those who are waiting to depart or just arriving

At what point is a traveler permitted to commence shortening the prayers

One who follows others and is unaware of the destination

Shortening the prayer when traveling without specific destination

Two routes to same destination and only one is longer than required distance

Shortening the prayer when in doubt regarding the distance of travel

Shortening the prayer when returning from cancelled travel plans

Returning after traveling a short distance and shortening the prayer