Table 1 Description of observed variable. These question descriptions are aimed at the public transport mode that respondents use most during the survey month.

Subjective norms

 SN1

My family and colleagues supported me in choosing this public transportation mode

 SN2

The social policy supports my choice of choosing this public transportation mode

 SN3

The mobility decisions of the people around me also affect my travel decisions

Behavior attitude

 BA1

It is safer to choose this travel mode in river valley-type cities

 BA2

It is more convenient to choose this travel mode in river valley-type cities

 BA3

It is more economical to choose this travel mode in river valley-type cities

 BA4

It is more comfortable to choose this travel mode in river valley-type cities

 BA5

It is more accessible to choose this travel mode in river valley-type cities

Perceived behavior control

 PBC1

The cost of choosing this public transportation mode can be afforded

 PBC2

It is simple for commuters to choose this public transportation mode

 PBC3

The choice of public transportation mode depends entirely on myself

Terrain spatial perception

 TSP1

The detour of this public transportation mode is relatively fewer in river valley-type cities

 TSP2

This public transportation mode is more convenient to travel between cities groups

 TSP3

This public transportation mode is less affected by the rivers of river valley-type cities

 TSP4

The public transportation mode is less affected by the road slope in river valley-type cities

 TSP5

The public transportation mode is less affected by the congestion in river valley-type cities

Behavior intention

 BI1

It is optimal for commuters in river valley-type cities to choose this public transportation mode

 BI2

I am willing to often choose this public transportation mode in river valley-type cities

 BI3

I have planned to take this public transportation mode as the preferred one