China has an extensive tollway system, which composed of nearly all expressways as well as having around 70% of the world's tollways. Tolls are roughly around CNY 0.5 per kilometre, and minimum rates (e.g. CNY 5) usually apply regardless of distance. However, some are more expensive (the Jinji Expressway costs around CNY 0.66 per kilometre) and some are less expensive (the Jingshi Expressway in Beijing costs around CNY 0.33 per kilometre). It is noteworthy that cheaper expressways do not necessarily mean poorer roads or a greater risk of traffic congestion.