As Peregrina2000 says - always walk FACING the oncoming traffic. In fact, if you walk on the 'wrong' side of the road, the police may well stop you, and ask you to move to the right side. Yes - this can become a problem on "blind bends". Change sides if you think it safer.
Always wear reflective clothing OR a head lamp OR both if walking in the dark. Personally, I have never seen the enjoyment of walking at night, losing the arrows and getting lost. I like to see the countryside I'm walking through!
Sadly, in some places it seems almost necessary to walk very early in the dark in order to ensure a bed for the night, as otherwise the albergues may be full. To my mind, this diminishes the pleasure of the camino....but, heck, who am I to comment?!?
Our thoughts and prayers are with the families of the dead pilgrim.
Buen camino!
Stephen.
http://www.calig.co.uk/camino_de_santiago.htm
P.S. A lot of nonsense is talked about the age of pilgrims. We are neither old, nor young [unless we're under a year old, or over 100.] I'm walking in 2014 on the Camino Ingles, to celebrate my 75th.