The swedish typeface for traffic signs is called Tratex and was designed by Karl-Gustav Gustafson and modified by Chester Bernsten. Tratex is available in 4 styles.
The first one is called Svart (“Black”):
Vit (“White”). It has an increased spacing to compensate the overglow effect.
PosVersal (“Positive Caps”):
NegVersal (“Negavite Caps”). Identical to PosVersal, but with increased spacing:
Swedish signs are mostly set in all caps. This seems to be a common practice in all Scandinavian countries.
Signs with lowercase letters seemed to be reserved for local targets and tourist information signs.