Poor Safety Performance
Safety of bus services is often a cause for concern. An estimated 75% to 85% of fatalities in road accidents worldwide occur in developing countries, despite low levels of car ownership. A significant proportion of road accidents involve public transport vehicles.

The number of kilometers per accident is a measure of safety.

Accidents are mainly caused by poor driving and, to a lesser extent, poor vehicle condition due to poor maintenance. Road conditions are not normally a major cause by themselves, although failure of drivers to regulate their speed in accordance with road conditions is a common cause of accidents.

Poor maintenance and driving standards are normally a result of inadequate regulations or inadequate enforcement of rules and regulations.