Simplify the following text for a Grade 12 native English-speaking person.
Original: This is to better allay car traffic in the highly scenic Kandertal , and also to provide faster transport through the Bernese Alps from the populous Mittelland in the north to the southern canton of Valais .
Simplified: This is to better spread car traffic in the highly scenic Kandertal , and also to provide faster transport through the Bernese Alps from the populous Mittelland in the north to the southern canton of Valais .