Countywide Travel Demand Model

The Alameda Countywide Travel Demand Model is an essential tool for the planning process. The model allows Alameda CTC to anticipate and forecast the potential impacts of local land development decisions on the major roadways in the county. The model is periodically updated to be consistent with the most recent land use and socio-economic database (Sustainable Communities Strategy from the Plan Bay Area series) of the Association of Bay Area Governments and assumptions of the Metropolitan Transportation Commission’s regional travel demand model.

The current Alameda countywide travel demand model completed in July 2014 includes Plan Bay Area 2013 land use assumptions. An update to incorporate the Plan Bay Area 2040 assumptions is underway.

Key features of the model

Model Documentation

Final Traffic Analysis Zones (TAZs)

Model Vehicle Volumes

Below are the plots of the model volumes for a.m. peak 1-hour, p.m. peak 1-hour, a.m. peak 4-hour, p.m. peak 4-hour and daily for the four Planning Areas of Alameda County. Volume plots for each time period are organized by horizon year (2010, 2020 and 2040) for each planning area. The volume numbers appear directly on the network roadway links and are printed quite small to show volumes on as many links as possible, but you can use the Adobe viewer to zoom in on them (view at 800 percent recommended).

2010
  Planning Area 1   Planning Area 2   Planning Area 3   Planning Area 4
AM 1 HR AM 1 HR AM 1 HR AM 1 HR
AM 4 HR AM 4 HR AM 4 HR AM 4 HR
Daily Daily  Daily  Daily
PM 1 HR  PM 1 HR  PM 1 HR  PM 1 HR
PM 4 HR  PM 4 HR  PM 4 HR  PM 4 HR
2020
  Planning Area 1   Planning Area 2   Planning Area 3   Planning Area 4
AM 1 HR AM 1 HR AM 1 HR AM 1 HR
AM 4 HR AM 4 HR AM 4 HR AM 4 HR
Daily Daily Daily Daily
PM 1 HR PM 1 HR PM 1 HR PM 1 HR
PM 4 HR PM 4 HR PM 4 HR PM 4 HR
2040
  Planning Area 1   Planning Area 2   Planning Area 3   Planning Area 4
AM 1 HR AM 1 HR AM 1 HR AM 1 HR
AM 4 HR AM 4 HR AM 4 HR AM 4 HR
Daily Daily Daily Daily
PM 1 HR PM 1 HR PM 1 HR PM 1 HR
PM 4 HR PM 4 HR PM 4 HR PM 4 HR
Performance Measure Maps

In support of Alameda CTC’s documentation of the 2014 Model update, the agency has created maps for the three following performance measures: vehicle miles traveled, transit accessibility and miles of congested roads. Maps are available for model study years 2010, 2020 and 2040.

VEHICLE MILES TRAVELED (VMT)

  VMT  Per Person  VMT Per Employee
2010 2010
2020 2020
2040 2040

TRANSIT ACCESSIBILITY

Transit accessibility is based on the number of jobs within a certain number of minutes of travel time by transit.

  Jobs Within 30 Minutes  Jobs Within 60 Minutes 
2010 2010
2020 2020
2040 2040

MILES OF CONGESTED ROADS

The color codes indicate network link volume/capacity ratios for the p.m. 4-hour peak period.

PM 4 HR Period
2010
2020
2040
Archive

Complete Model Documentation for the Prior Model Updated in 2011