Figure 3-12: Level of Service

Level of Service (LOS) is a qualitative measure that represents the quality of traffic based on performance measures such as speed and density using letters A-F. “A” represents free flowing traffic, while “F” represents frequent jamming and is indicative of a roadway with more demand than capacity. Once again, Van Buren Boulevard, and Limonite Avenue are flagged as having poor levels of service. Jurupa Road and Armstrong Road are also indicated to be approaching unstable flow conditions, while the remainder of the city’s streets are predicted to maintain stable flow conditions in the near term, according to the draft General Plan Mobility Element (see Figure 3-12). As part of the draft General Plan, 2035 Roadway Level of Service estimates were generated to simulate future traffic given population increase and planned buildout. In the future scenario, average daily trips (ADTs) remain consistent along main arterials and LOS will be improved in several key areas: Van Buren Boulevard between Etiwanda Avenue and Bellegrave Avenue, and Limonite Avenue between Bain Street and Van Buren Boulevard. LOS decreases are also anticipated along other major roadways, but this is expected in a developing city.

FIGURE 3-12: LEVEL OF SERVICE