While accident data show a decreasing number of fatalities and serious injuries on EU roads, recent data from ERSO show an increasing proportion of elderly in the fatality statistics. Due to the continuously increase of life expectancy in Europe and other high developed countries, senior people mobility needs and habits have been changing from the last years to now and there are a higher number of senior drivers, cyclists and pedestrians. Moreover, due to their greater vulnerability, the elderly are more likely to be seriously injured in any given accident than younger people. With the goal of improving their safety mobility, the SENIORS Project, funded by the European Commission, is investigating and assessing the injury reduction that can be achieved thought innovative tools and safety systems. The first step is to develop the required understanding of accident scenarios, injury mechanisms and risks and to implement these findings in the test tool and test assessment procedures. To this end, different accident databases have been studied and compared between them regarding the more critical accident, their injuries, their behavior and the transport modes that represent higher risk. This paper presents a novel statistical study of the Spanish accident database and the achieved results. A new overview has been carry out analyzing main accident situations where senior drivers, cyclists or pedestrians were involved in and the most typical causes and consequences in terms of injuries severity. Moreover, an in-depth analysis of scenarios, actions and law violations has been performed which made possible the identification of elderly traffic circulation behavior. Differences between ages and gender have also been shown. Finally a results comparison with other countries databases as well as with literature information has been developed.