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  2. Stack interchange - Wikipedia

    en.wikipedia.org/wiki/Stack_interchange

    The Judge Harry Pregerson Interchange in Los Angeles, California, United States. Sometimes a fifth level is added for HOV connectors. An example of this exists in Los Angeles, California, at the Judge Harry Pregerson Interchange. The connector from HOV southbound 110 to HOV westbound 105 can be at the same level as the connector from mixed ...

  3. Traffic congestion in LA is still the worst, traffic survey ...

    www.aol.com/news/2016-03-23-traffic-congestion...

    Los Angeles traffic is the worst, and we've got bad news — it doesn't look like it's going to get any better. ... The TomTom rankings showed a 2-percent increase in congestion level from last ...

  4. Four Level Interchange - Wikipedia

    en.wikipedia.org/wiki/Four_Level_Interchange

    The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. [1] Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles, California, United States, it connects U.S. Route 101 (Hollywood Freeway and Santa Ana Freeway) to State Route 110 (Harbor Freeway and Arroyo Seco Parkway).

  5. Traffic congestion - Wikipedia

    en.wikipedia.org/wiki/Traffic_congestion

    4 New York City, New York 140 hours $2,072 5 Washington, D.C. 124 hours $1,835 6 Los Angeles, California 103 hours $1,524 7 San Francisco, California 97 hours $1,436 8 Portland, Oregon 89 hours $1,317 9 Baltimore, Maryland 84 hours $1,243 10 Atlanta, Georgia 82 hours $1,214 11 Houston, Texas 81 hours $1,199 12 Miami, Florida 81 hours $1,199 13

  6. Traffic alert: Biden, Obama will appear at downtown L.A ... - AOL

    www.aol.com/news/traffic-alert-biden-obama...

    Los Angeles transportation and police officials referred questions about road closures to the U.S. Secret Service, which declined to provide details but warned of potential congestion.

  7. Level of service (transportation) - Wikipedia

    en.wikipedia.org/wiki/Level_of_service...

    Level of service (LOS) is a qualitative measure used to relate the quality of motor vehicle traffic service. LOS is used to analyze roadways and intersections by categorizing traffic flow and assigning quality levels of traffic based on performance measure like vehicle speed, density, congestion, etc.

  8. Transportation in Greater Los Angeles - Wikipedia

    en.wikipedia.org/wiki/Transportation_in_Greater...

    The D Line (named the Purple Line in 2006; first leg to Westlake/MacArthur Park opened in 1993; to Koreatown in 1996) is a subway line running between Union Station in Downtown Los Angeles and Wilshire/Western station in the Koreatown neighborhood of Los Angeles Mid-Wilshire district. It was considered a branch of the Red Line prior to 2006.

  9. Street hierarchy - Wikipedia

    en.wikipedia.org/wiki/Street_hierarchy

    A 1990 study [9] compared the traffic performance in a 700-acre (2.8-km 2) development that was laid out using two approaches, one with a hierarchical street layout that included cul-de-sac streets and the other a Traditional Neighborhood Design street layout. The study concluded that the non-hierarchical, traditional layout generally shows ...