Have a reflective vest on whenever you get out of the car on the roadside (tire change, etc.), not only at night. I've seen a few near misses which were thankfully only misses because of a reflective vest. In a few European countries reflective vests are mandatory, as are fire extinguishers, first aid kits, and reflective triangles (placed 100-150m behind a stopped vehicle).
Another good idea is to make sure any and all objects in the car are fastened and secured.
This includes passengers! You don't want the momentum of 70kg bouncing freely around next to you.
Caution - drastic:
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is
where you're going, not
how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread