Traffic Jams

Everyone know that traffic jams are very terrible. You are stuck on the road for hours and if you are late somewhere then it's more worse.
This summer I was going by the bus to meet someone and unfortunately everyone was going home from work that time so it wasn't very fun :( But you know, Maardu bus drivers are awesome :D The man who was driving the bus without hesitating drove into the pedestrian footpass and bypassed the rest of the cars. That was fun. It is a pity that not all traffic jams are so fun.
I bet that those traffic jams are problem of a whole world but how we should deal with it? Build new roads, reduce amount of people and cars :), make our roads as wide as possible or what? Anyway it would need tons of money and time. Money I can print, but you can't get back the time.