The Highway-Railroad Crossing Safety Program participates in the cost of safety improvements at public highway-railroad grade crossings. These funds are used to install new crossing signal devices, upgrade existing signals, and provide low-cost improvements, such as increased sight distance, widened crossings, increased signal lens size, or crossing closures. However, the available funding allows only a limited number of safety improvements each year. Priorities for funding are determined through a benefit-cost analysis, considering factors such as vehicle and train traffic, train speed, crossing characteristics, effectiveness and cost efficiency of proposed improvements.