Lucerne is one of the places, where most of the traffic ways meets troughout Switzerland. Kriens therefore is close to the best trafic connections. From Lucerne, you have fast trainings to all the big cities in Switzerland, you have connections to all the famous tourist resorts.
Arriving in Lucerne by train, you just have to choose the most suitable way to get to Kriens. You find the busses (line number 1) to Kriens just outside of the train station, or you can take one of the taxis waiting in front of the main station. The travel time to Kriens is depdening on traffic situation between 5 and 10 minutes.