To calculate the ROI of your telematics investment, you need to estimate the cost and benefit of your system over a given period, such as a year. For example, let's say that you have a fleet of 50 vehicles and you invest in a telematics system that costs $500 per vehicle for hardware, $50 per vehicle per month for software and subscription, $100 per vehicle for installation, and $5,000 for training. This adds up to a total cost of $55,000 for one year. Additionally, you estimate that your telematics system will generate fuel savings of $10,000, maintenance savings of $15,000, insurance savings of $5,000, operational savings of $20,000, and revenue growth of $25,000. This means that the total benefit of your system for one year is $75,000. Using the ROI formula, you can then calculate the ROI of your telematics investment as 36.36%. This indicates that for every dollar you spend on your telematics system, you get back $1.36 in return - a positive and profitable ROI.