One piece of gear that has greatly increased the safety of cross country flying in recent years is the satellite tracker. This device allows position reporting and text and/or email communication while out of cell phone service range.
A very comprehensive source for safety in free flight from the FAI (International Aviation Federation)
The Safety page from the United States Hang Gliding and Paragliding Association https://www.ushpa.org/page/safety
The Safety page from the British Hang Gliding and PAragliding Association<
The Safety page from the French Federation of Free Flight http://federation.ffvl.fr/pages/securite-et-technique and http://www.efvl.fr/sites/efvl.fr/files/2014_Livret_FFVL_9BD.pdf
LOTS of info, here is the safety subform http://www.paraglidingforum.com/viewforum.php?F=4
For for HG