Commuter Matrices 1970 - 2000

The Commuter matrix is the result of question #21 of the Swiss National Census: Question #21: Which means of transportation do you normally use for your commuter trip (work / school)? Please list all means of transportation you used on on the same day for your trip to/from school/work. Public means of transportation were chosen as primary in combined trips (e.g. railway + car).