It depends on the circumstances. If you use your own bicycle or small motorbike all the time, you can deduct CHF 700 a year from your tax. You can also deduct the cost of season tickets for public transport.
The cost of a private car can only be deducted in exceptional cases if there is no public transport available or if it saves more than one hour of your time. and many others...
Employees who have a company car cannot deduct travel expenses.