Public Transportation

The public transportation system in major cities is a good alternative to driving yourself and dealing with the traffic and parking situation. 

Cities have trains or subways, buses, and plenty of taxis and ride sharing drivers so you can get where you need to go. 

Many public transportation options such as the bus and train are very affordable and free you of the hassle of driving.  It is possible to live without a car in most major cities.

alternative (n)可供选择的事物  

free someone of… 使某人摆脱。。。