7.2.2 One type of vehicle suggested as an option for vaccine distribution by Ministry of Public Health officials is a modified motorcycle that is attached to a small 2-wheeled trailer to create a "motor-tricycle'. The general features of this type of machine are shown in Annex 9, where the model illustrated is a 'Zongshen' 8.5kw model manufactured in China This is based on a standard 150cc motor-cycle, but modified to provide a load-carrying trailer with a capacity of 360 kg and a cost of approximately 800
- 1000 US$. Various designs of essentially similar motor-tricycles are produced in other countries, with engine sizes generally in the range from 150 - 250cc, and with either air-cooled or water-cooled engines. Some manufacturers offer a fully-enclosed driving compartment, and this design resembles more of a 3-wheeled car than a motor-tricycle, although given the small engine size, these are still much more economical than most conventional cars with 4 wheels Major benefits of the Chinese model is already known and used by other organisations in the country. One critical issue when introducing any new type of vehicle will be its overall durability and acceptability, and it is not known how reliable and suitable any of the motor tricycles described above would prove to be in practice, when used for vaccine distribution.