Cars on Highway (IMAGE) Spanish Foundation for Science and Technology Caption The measures that really cause a profound and steady change as to the accident rate are those that introduce safety elements into the car and become mandatory, like the safety belt. Credit SINC Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.