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Maps of the Month in 2011

December 2011

Our map of the month mixes something old with something new. We dug up a historical map showing the original plans for building and extending BART, circa 1957. Then we superimposed the actual BART system as it stands today, along with new segments that are under construction. You can see that as originally conceived the core BART system (indicated by a solid light blue line) would have extended across the Golden Gate deep into Marin County, as well as traveling down the Peninsula on the West Side of the Bay to Palo Alto. While the Marin and Palo Alto segments never happened, the rest of the BART system conforms fairly well to the original blueprint for the first-stage system.

November 2011

These maps show a comparison of communities with home values between $250,000 and $750,000 that are accessible by auto and transit in a 45 minute evening commute from (to pick a random address) 390 Main Street, San Francisco. The travel time data is modeled from a 2005 transit network. The home values are as of 2000 and are expressed in year 2000 dollars. The home value estimates were created by ABAG by combining ParcelQuest real estate transaction data and real estate tax assessment data. This information can be generated for any Bay Area address using an interactive mapping tool available under “Maps” at onebayarea.org/maps.htm.

October 2011

In the nation’s 100 largest metropolitan areas, about 7.5 million households do not own a vehicle and 700,000 of those zero-vehicle households also do not have access to regular public transit service. This combination places these households at a severe mobility disadvantage in obtaining access to jobs, school, and other vital destinations. The good news depicted in this map is that while the Bay Area is home to the 6th largest concentration of zero-vehicle households in the U.S., about 98% of those households in our region also are located in areas served by public transit. As the map clearly shows, the story is much different in the eastern half of the nation.

September 2011

This chart compares support for transportation measures among Bay Area voters with voters statewide. It confirms what many of us already suspect, namely that our region’s voters are more willing to tax themselves to support transportation. The gap between the Bay Area and the state average is most noticeable with respect to rail improvements financed by general obligation bonds. The greatest gap occurred in November 2008, when 62 percent of Bay Area voters supported Proposition 1A, the high-speed rail bond, versus only 53 percent statewide. On the other hand, Bay Area voters are less supportive than the average Californian towards measures aimed at protecting local and state transportation funding from being diverted to other purposes.

July 2011

The map of the month shows the amount of combined federal, state and other taxes charged for gasoline sales nationwide. As of May, 2011, Connecticut has the highest gasoline tax at 70.3 cents per gallon. California has the fourth highest gasoline tax in the country at 68.9 cents per gallon. Alaska has the least tax at 26.4 cents per gallon. The data for the map of the month is compiled by the American Petroleum Institute on a quarterly basis.

June 2011

The map of the month shows the daily total number of express bus trips along the Bay area regional freeway corridors. The routes trip totals include operators that have service along these corridors. The maps also shows the area's existing express lane network development plan, with some high occupancy vehicle (HOV) lanes being converted to express lanes.

May 2011

The map of the month shows how federal funding is distributed throughout the country based on the amount of taxes paid by each state. By comparing the amount of taxes paid per state to the amount of federal spending received by each state, an index was created to show which states are benefitting more from federal spending, and which states are supporting them. "Get More States" have a Federal Spending Received per Dollar of Taxes Paid ratio of greater than $1.00, while "Pay More States" have a ratio of lower than $1.00.

March 2011

This map illustrates the percentage population change by county in the state of California between 2000 and 2010. The data is based on the recently released 2010 census data, and shows that all counties within the state registered a population increase except Plumas, Sierra and Alpine counties. Placer, Kern and Riverside counties experienced the largest population growth with more than a 25% increase over the past 10 years.

February 2011

This month's map shows the projected change in mode share for county to county home-based work trips in the Bay Area. The data are based on 2006 as the base year, and 2035 as the projection year. Most counties in the Bay Area show an increase in transit trips, accompanied by a general decrease in the number of drive alone trips. Santa Clara county shows an increase of up to 2% in transit trips with up to a 3% decrease in the number of drive alone trips. San Francisco county shows the most improvement in both categories.

January 2011

The map of the month shows the annual vehicle miles traveled (VMT) per capita on California’s state highway system in 2008. The map shows that the Bay Area has among the lowest VMT per capita of any metropolitan area in the state.

Archive of Previous Map of the Month Titles:

 

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