Map of the Month

Each month a new map is presented to the Commission to help explain important trends in the Bay Area, across the nation and around the world. These custom-crafted maps are prepared by MTC’s Data & Visualization team.

January 2013
This map shows CO2 emissions in 2005 in million tons by countries around the world. The countries are generalized as circles that are proportional in size to the emissions. This shows the United States as the largest emitter and China in the number two...
December 2012
This map illustrates the most likely destination zones for workplace trips (different shades of green), areas with existing workplace EVSE (electric vehicle support equipment) are shown with red dots, and areas with employers interested in deploying...
November 2012
The Popular Vote Density Map attempts to convey a more nuanced view of the recent presidential contest than the ubiquitous red/blue state map. The typical statewide or county-wide red/blue map (shown at left) depicts presidential voting results on a...
October 2012
The chart shows that although traffic accidents remain a major public safety problem the biggest killer of people ages 5 to 34 vehicle travel is far safer than it was a few decades ago, for the reasons listed.
September 2012
This map shows the distribution of FasTrak toll crossings generated by each county in the Bay Area. As expected, the distribution generally shows that counties closest to a bridge account for a greater share of FasTrak usage. However, some toll crossings...
June 2012
This map illustrates the racial and ethnic diversity in the Bay Area from Census 2010. Racial diversity is measured by a diversity index that is calculated using US Census racial and ethnic population characteristics from the PL-94 data file. The...
April 2012
This map illustrates the Nation's top five most densely populated Urban Areas as tabulated by Census 2010. Four of these areas are in California. The San Francisco-Oakland and San Jose Urban Areas rank second and third, respectively. That the New York...
March 2012
T he map shows the Center for Neighborhood Technology's Housing and Transportation (H+T) Affordability Index using 2009 American Community Survey Data. Compared side-by-side is the cost of housing as a percent of income (on the right) with the cost of...
February 2012
This map illustrates the variation by metropolitan area of income levels required to be in the top 1% of earners. While a U.S. household must earn greater than $380,000 to rank in the top 1% of all American households, a much higher income is required in...
January 2012
In the map, we have color-coded the number of years since each of the 50 states last raised taxes on gasoline. On the positive, side, quite a few states managed to raise rates within the past year, although California adjustment was actually part of a...
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...
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...