Once again this is a bit misleading. Sure there are crimes at gas stations. I don't stop at those sketchy looking inner city gas stations. Also, most crimes are against the employees of the stations. And finally, there are a lot of crimes at gas stations, but there are probably 50+ million people visiting the stations daily. Per interaction, they're pretty safe especially if you stick to safe looking ones.
It falls back to exactly what I said. I know how not to get killed on the roads, and I know how not to get attacked at a gas stations.
But when I get on a locked train, there's almost nothing I can do to avoid being a victim at that point beyond fighting harder than my attacker.