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Recently a number of new photographic systems have been investigated with the object of replacing the conventional silver halide emulsions and as such could possibly represent the basis for further development of new methods of production for printed circuits. By using prepared combinations of metal and a light sensitive substance, e.g., arsenous sulphide/silver and cadmium iodide/tin, one can obtain directly a positive metal image. This approach by the authors was used for the development of a new direct positive photographic material for printed circuits which is easily processed and can be safely stored.

Old age is a complex and dynamic phenomenon. The relationship between old age and transport is also very complex due to the heterogeneity within this age group. Yet what is certain is that with age, a person’s functional abilities change. This chapter provides a summary of how older people can be vulnerable within the road environment. Using an established framework for understanding old-age vulnerabilities, this chapter explains the common exposure factors and threats that several older people face in the transport environment. These primarily deal with individual physical and cognitive characteristics, medical conditions as well as the appropriateness (or not) of infrastructure. Subsequently, common difficulties for older drivers, pedestrians and public transport users are discussed. The main vulnerabilities that result from such difficulties are related to an over-representation of older people in accidents and to a lower quality of life due to mobility inefficiencies. Yet, using the same framework, the compensation techniques that older people often adopt to minimise such limitations are also highlighted. Reference is also made to the issues related to the lack of awareness in old age and the corresponding inability to compensate. The review concludes by suggesting a way forward for further studies on transport vulnerability in later life.