1.  Logic And Reason

 Statistically these prevent more broken bones than blind faith does.

2.  Wisdom

The components of which are intelligence, experience and humility. Pack as much of each as you can carry – most effective when used together.

3,  Education

An effective all-round tool – issue one to each traveller.

4.  Curiosity and tolerance

For the scenery, the vehicle, the route and the fellow traveller – each is a part of the journey.

5.  Health and fitness

Because some days you have to get out and push.