The rider makes the bike safe not the other way around! Follow ALL the rules and laws pertaining to the use of bikes on roadways in your country. Don't ride with earbuds, pay attention, look ahead, listen all around.
Having said that you should get a bike that has wider tires and are at least 28mm with 32 being idea. Lights front and rear with multiple ones on the rear will help; also wearing a neon green shirt or safety vest will help. Make sure the bike is mechanically sound.