The modeling of eco-driving behaviors is a key issue in the research of Intelligent Transportation Systems. Most efforts have been made regarding internal combustion vehicles, and few works have been reported in the field of electric vehicles. On the other hand, these behavior analyses are usually conducted through naturalistic driving researches that involve the use of instrumented vehicles, available in a small number, which reduces the impact of the results. This paper presents a system for estimating the remaining charge of an electric vehicle by considering the driving behavior measured using a smartphone. For this purpose, first of all, data measured by the smartphone and by the onboard instrumentation were compared in order to demonstrate that both sources are equivalent and that the former is sufficiently accurate. The driving profiles obtained were then used to estimate the expected battery consumption of the electric vehicle using a Neural Network to represent the model that uses the information provided from the smartphone as input, such as speed, acceleration and jerk. The system has been tested with 10 drivers with a prediction capability of the expected battery consumption higher than 95%. These results show that a smartphone is a tool with a sufficient degree of fidelity to capture data from drivers, and so avoid expensive, complex systems like instrumented vehicles, and it can also be used for estimating energy consumption and predicting the remaining battery charge.

In recent years, cooperative systems have been gaining relevance in autonomous driving to such an extent that they are necessary to reach the final goal, the autonomous car. But the relevance that the Vehicular Ad-hoc NETworks (VANETs) have acquired shows that it is still an immature technology and needs more time to develop. Proof of this is that most of these systems do not provide real security in communications; so the scientific community has tried to develop new technologies to allow greater security in this type of communications. Therefore, in this paper, a review of how the technology has evolved to maintain safety in the VANETs will be carried out; in addition, a breakdown of the different security technologies grouped by their type and the advantages and disadvantages of each one.