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Mobility

The City’s successful transportation policies have limited the growth of automobile traffic, despite significant population growth locally and regionally. Still, the city’s transportation systems will need to adapt over time as the region grows, technology advances, and the economy changes. Cambridge will address these challenges by enhancing its multi-modal network locally, expanding connections to regional sustainable transportation, and advocating for progressive transportation policies across the region.

Envision indicators are updated as new data becomes available, which varies by indicator, but no more often than annually.

View the Mobility Plan

Key Actions

StrategyAdjust land use policy to support more sustainable transportation choices and limit unnecessary automobile trips.
Core Values
  • Livability
  • Sustainability & Resilience
Action TypeZoning Changes
Lead DepartmentCDD
StatusCompleted
Project PhaseFinal phase

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Indicators

Number of fatalities caused by vehicle crashes

Needs improvement

The City of Cambridge’s Vision Zero policy sets a goal to eliminate traffic fatalities and serious injuries, while encouraging active living and improving comfort for pedestrians and cyclists. This indicator tracks Cambridge’s ongoing progress toward this goal.

The chart shows the number of fatalities due to motor vehicle crashes in Cambridge, excluding any that occurred on roads under jurisdiction of the State police (e.g. Memorial Drive, Monsignor O'Brien Hwy).

Source: Cambridge Police Department
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Number of serious injuries (calls for service with EMS transport) caused by vehicle crashes

Needs improvement

The City of Cambridge’s Vision Zero policy sets a goal to eliminate traffic fatalities and serious injuries, while encouraging active living and improving comfort for pedestrians and cyclists. This indicator tracks Cambridge’s ongoing progress toward this goal.

The chart shows the number of crashes in Cambridge that led to a call for service with an EMS transport (meaning someone was taken to the hospital in an ambulance), excluding any that occurred on roads under jurisdiction of the State police (e.g. Memorial Drive, Monsignor O'Brien Hwy).

Source: Cambridge Police Department
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Percent of people who drive alone to work

Needs improvement

The US Census Bureau’s American Community Survey reports mode share for residents and employees annually. Tracking this data will illustrate success in reducing automobile dependence for both residents and employees.

The chart shows the share of people driving alone to work for two groups:

  • People that work in Cambridge
  • People that live in Cambridge

Source: American Community Survey 1-year Data. Note that no data was produced for 2020 due to the pandemic.
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Bicycle infrastructure comfort level

Improving

Modal access indicators measure progress towards improving important multi-modal infrastructure and expanding access for all to a variety of mobility modes. This indicator shows what percentage of roads and paths that are rated for Bicycle Level of Comfort (BLC) have a BLC of 1 or 2 out of 5, which are target levels of comfort for Cambridge.

Source: Cambridge Bicycle Plan
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Available mobility options

Improving

When people have better access to a variety of transportation options, their mobility increases. This indicator measures the percent of people with nearby access to all of these sustainable transportation options:

  • 0.125 miles walking distance to a Bluebikes bikeshare dock
  • 0.25 miles walking distance to a bicycle facility with a bicycle level of comfort of 1 or 2 (as defined by CDD)
  • 150 feet walking distance to a pedestrian crossing
  • 0.5 miles walking distance to an MBTA rapid transit station or a bus stop for a high-frequency route. High frequency routes are defined as those with a scheduled peak-hour frequency of 10 minutes or less (six buses per hour during 7-9 am and 4-6:30 pm)

Source: Transit mode from Cambridge CDD, Cambridge GIS; Population from 2010 and 2020 Census, plus Annual Housing Starts data from CDD; Number of workers from Census LEHD Origin-Destination Employment Statistics (LODES).
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Share of Residents that live within 0.5 walking distance miles of an MBTA subway station

Improving

Measuring the number of transportation options that the average Cantabrigian has available is an indicator of overall freedom of movement. This indicator estimates the share of the total Cambridge population that resides within a half-mile walking distance of an MBTA subway station. Note that a new Green Line station at Union Square in Somerville, within walking distance of some Cambridge residents, opened in 2022.

Source: 2010 and 2020 Census; Annual Housing Starts data from CDD
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Share of Residents that live within 0.25 miles walking distance of an MBTA high frequency bus line

Needs improvement

Measuring the number of transportation options that the average Cantabrigian has available is an indicator of overall freedom of movement. This indicator estimates the share of the total Cambridge population that resides within a quarter-mile walking distance of a stop on a high-frequency MBTA bus route. Note that the number can fluctuate as schedule adjustments change the number of high-frequency routes.

Source: 2010 and 2020 Census; Annual Housing Starts data from CDD
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