Transportation Systems Management and Operations and Performance Based Practical Design Case Study 4: Demonstrating Performance-Based Practical Design through Regional Performance-Based Planning

Long Description of Figure 2

Figure 2 is a graphic showing the goals and performance measures comparison from the San Diego Association of Governments' 2050 Regional Transportation Plan. Four goals are listed under System Preservation and Safety: the annual projected number of vehicle injury/fatal collisions per 1,000 persons, the annual projected number of bicycle/pedestrian injury/fatal collisions per 1,000 persons, the percent of transportation investments toward maintenance and rehabilitation, and the percent of transportation investments toward operational improvements. In existing conditions (2008) the annual projected number of vehicle injury/fatal collisions per 1,000 persons is 4.07. For 2050 no-build conditions, the number of vehicle injury/fatal collisions per 1,000 persons rises to 4.22. For 2020 revenue-constrained conditions, the number of vehicle injury/fatal collisions per 1,000 persons drops to 3.83, below the existing number. By 2035, the revenue-constrained number is 4.03. By 2050, that number rises to 4.20, 0.02 difference from the 2050 no-build conditions. For the number of bike/pedestrian injury/fatal collisions per 1,000 persons, the existing 2008 value is 0.63. In 2050, the no-build conditions result in a bike/pedestrian collision value of 0.56 per 1,000 persons whereas the revenue-constrained conditions result in 2.63 per 1,000 persons. In revenue-constrained conditions in 2020 and 2035, respectively, the number of bike/pedestrian collisions is 1.07 and 1.72 per 1,000 persons. The percent of transportation investments toward operational improvements as well as maintenance and rehabilitation is projected to be 30% in 2020 and 2035, with a projection of 29% in 2050.