Ibn al-Mundhir and others have transmitted an Ijmaa that there is no shortening of the morning [fajr] prayer nor the maghrib prayer.
al-Nawawi said: The majority have said that one is allowed to shorten the prayer in every permissible journey.
Some of the Salaf said that fear during travel is a condition for shortening the prayer.
Some said that shortening the prayer is only allowed if one is traveling for Hajj, Umrah, or Jihaad.
Abu Hanifah and al-Thawri have said one can shorten prayer in every journey whether the journey is one of obedience or disobedience.
شرح سنن النسائي المسمى ذخيرة العقبى في شرح المجتبى
Volume 16 Page 328