import { Plot } from '../plots';
export declare class PotentialDelayRiskPlot extends Plot {
    units: string;
    subTitle: string;
    constructor(units: string, subTitle: string);
    getColor(val: number): "#00dd00" | "#bffc05" | "#ffff00" | "#fcb205" | "#ff0000" | "#6e0000";
    getForceY(): number[];
    getTickCount(): number;
    /**
     * Assign yAxis label (left side of chart), based off road state value
     *
     * @param val delay risk value
     */
    getTickFormat(v: number): "Normal" | "Slight" | "Moderate" | "Heavy" | "Severe" | "Extreme";
}