Travel Demand Model
A Travel Demand Model (sometimes referred to as a Traffic Demand Model) is a tool for analyzing the impacts of development on the transportation system. The current TDM was developed in the CUBE/Voyager platform, now owned by Bentley, using 2010 Census data and updated socioeconomic data from several sources including information from the Sacramento Area Council of Governments (SACOG). The model has a forecast horizon year of 2040.
The current TDM was updated by Kimley-Horn and Associates as part of the 2020 Major Update to the Traffic Impact Fee Program. This update brought the TDM base line year to 2018. Several peer reviews were completed by DKS Associates. Subsequently, Fehr & Peers further revised the TDM to include a tool for estimating Vehicle Miles Traveled (VMT) in order to analyze development projects' impacts under CEQA and SB 743 (learn more about VMT and SB 743 here).
The TDM is an essential tool for implementing the General Plan goals and policies, updating the Zoning Ordinance, planning of new roadways for the Capital Improvement Program (CIP), and updating Traffic Impact Fees. The TDM will help guide the County through the next twenty years of land use planning. The model will be not only be used by the County but also by private consultants and public agencies. The County intends to keep the model current, updating it as needed to incorporate new, approved development projects.
Work is currently underway to update the base year for the TDM to 2022, with a forecast horizon of 2045. This work will be completed along with the next Major Update to the Traffic Impact Fee Program in late 2024.
For a comprehensive list of Items presented to the Board on the TDM, click on the Board of Supervisors Agenda Items tab.
Frequently Asked Questions
Board of Supervisor Agenda Items
Please note: These agenda items may not reflect the most current information and are subject to change. For the latest information on agenda items related to this project, refer to the County online agenda calendar: https://eldorado.legistar.com
| Date |
Item |
File ID |
Description |
| 06/17/2014 |
34 |
13-1218 v6 |
Community Development Agency, Long Range Planning, providing the Board with a Long Range Planning update including the Land Use Policy Programmatic Update (LUPPU). |
| 04/15/2014 |
18 |
13-1218 v5 |
Community Development Agency, Long Range Planning, providing the Board with a Long Range Planning update including the Land Use Policy Programmatic Update (LUPPU). |
| 04/08/2014 |
12 |
14-0245 v4 |
Community Development Agency, Long Range Planning, recommending the Board approve the Scenario 3 growth forecast as the starting point for initiating the Major Five-Year Capital Improvement Program and Traffic Impact Mitigation Fee updates. |
| 03/18/2014 |
6 |
11-1441 v5 |
Community Development Agency, Long Range Planning, recommending the Board approve and authorize the Purchasing Agent to sign Amendment III to Agreement for Services No. 396-S1211 with Kimley-Horn and Associates, Inc. for Travel Demand Model creation and update services, expanding the scope of work and increasing the not-to-exceed amount of the Agreement by $16,000 for a new not-to-exceed total amount of $501,477, and extending the term of the Agreement to December 31, 2015, contingent upon review and approval of the Amendment by County Counsel and Risk Management. FUNDING: The total contract is funded by a combination of Traffic Impact Mitigation Fees, Road Fund, and General Fund. Amendment III is specifically funded by the General Fund (no Federal Funding). |
| 03/04/2014 |
20 |
13-1218 v4 |
Community Development Agency, Long Range Planning, providing the Board with a Long Range Planning update including the Land Use Policy Programmatic Update (LUPPU). |
| 02/24/2014 |
1 |
14-0245 v1 |
Community Development Agency, Long Range Planning, recommending the Board consider the following:
1) Receive information on El Dorado County’s General Plan Travel Demand Model;
2) Direct staff to proceed with one of the growth forecast scenarios as the starting point for initiating the Major five-Year CIP and TIM Fee updates; and
3) Receive information on how the County implements General Plan Policy TC-Xa (Measure Y) and associated General Plan Policies TC-Xb through TC-Xi. |
| 01/28/2014 |
6 |
13-1218 v3 |
Community Development Agency, Long Range Planning, providing the Board with a Long Range Planning update including the Land Use Policy Programmatic Update (LUPPU). |
| 12/03/2013 |
32 |
13-1218 v2 |
Community Development Agency, Long Range Planning Division, providing the Board with a Long Range Planning update including the Land Use Policy Programmatic Update (LUPPU). |
| 10/29/2013 |
19 |
13-1218 v1 |
Community Development Agency, Long Range Planning, providing the Board with a Long Range Planning update including the Land Use Policy Programmatic Update (LUPPU). |
| 10/22/2013 |
9 |
11-1441 v4 |
Chief Administrative Office recommending the Board authorize the Purchasing Agent to execute Amendment II to Agreement for Services No. 396-S1211 with Kimley-Horn and Associates, Inc. revising the scope of services to add two additional tasks under Component 2 - Environmental Impact Analysis for Targeted General Plan Amendment (TGPA) and Zoning Ordinance Update and adding one additional task under Component 4 - Rural Area Land Use Forecasting and Iterative Analysis, increasing the contract amount by $33,940 for a total contract amount of $485,477.50, and extending the term through July 31, 2014, contingent upon review and approval of the Amendment by County Counsel and Risk Management. FUNDING: The total contract is funded by a combination of Traffic Impact Mitigation (TIM) Fees, Road Fund, and General Fund. Amendment II is specifically funded by General Fund. |
| 09/30/2013 |
2 |
13-1219 v1 |
Community Development Agency, Long Range Planning Division recommending the Board receive additional information as a follow up to the presentation provided by the Measure Y Committee on August 26, 2013. The discussion provides information on the following topics:
1) Level of Service on State Highway 50 and Measure Y Interpretation;
2) Land Development Projections;
3) Land Use Policy Programmatic Update (LUPPU);
4) Traffic Impact Mitigation (TIM) Fee Program;
5) Next Steps. |
| 07/30/2013 |
29 |
13-0924 v1 |
Community Development Agency (CDA) Long Range Planning Division presenting a workshop to begin the preparation of the 2014 Capital Improvement Plan (CIP), and requesting direction on the Board’s preferred growth projection option for the CIP and Traffic Impact Mitigation Fee (TIM) Fee Program updates. |
| 03/25/2013 |
5 |
12-0475 v6 |
Chief Administrative Office providing a presentation on the Travel Demand Model. |
| 03/05/2013 |
7 |
11-1141 v3 |
Chief Administrative Office recommending the Board authorize the Purchasing Agent to execute Amendment I to Agreement for Services No. 396-S1211 with Kimley-Horn and Associates, Inc., revising the scope of services to add Component 4 which includes Task 4.1 - Rural Area Land Use Forecast, Optional Task 4.2 - Land Use Forecast Revision and Model Analysis, Optional Task 4.3 - Meetings and Documentation, and Optional task 4.4 - Additional Presentations, and increasing the contract amount by $72,042.50 for a total contract amount of $451,537.50. |
| 02/26/2013 |
23 |
12-0267 v13 |
Chief Administrative Office providing an update on the Land Use Policy Programmatic Update (LUPPU) process. |
| 01/28/2013 |
3 |
12-1578 v1 |
Department of Transportation recommending the Board receive information regarding the Capital Improvement Program, the Traffic Impact Mitigation Fee Program, and the Travel Demand Model. |
| 12/04/2012 |
40 |
12-0267 v11 |
Chief Administrative Office presenting update on the Land Use Policy Programmatic Update (LUPPU). |
| 10/30/2012 |
34 |
12-0267 v10 |
Chief Administrative Office presenting update on the Land Use Policy Programmatic Update (LUPPU). |
| 09/25/2012 |
43 |
12-0475 v5 |
Chief Administrative Office recommending the Board provide direction on roadway parameters to be analyzed with the Travel Demand Model. |
| 07/24/2012 |
19 |
12-0475 v4 |
Chief Administrative Office recommending the Board provide comment and direction on the Roadway Network Map and Traffic Analysis Zone Map (Attachments 3A & 3B) for use in updating the El Dorado County Travel Demand Model. |
| 06/26/2012 |
46 |
12-0475 v3 |
Chief Administrative Office recommending the Board review and comment on the Roadway Network Map and Traffic Analysis Zone Map (Attachments 3A & 3B) for use in updating the El Dorado County Travel Demand Model. |
| 05/01/2012 |
39 |
12-0475 v2 |
Chief Administrative Office recommending the Board review and comment on the Travel Demand Model Update major assumptions as shown in Attachment A that will be used to establish Achievable Development, 2025 No-Project, and 2035 Project/No Project land use forecasts for use in updating the El Dorado County Travel Demand Model as described in the Kimley-Horn & Associates, Inc.’s Technical Memorandum No. 10: Land Use Assumptions. (Cont'd 4/16/12, Item 2) |
| 04/16/2012 |
2 |
12-0475 v2 |
Chief Administrative Office recommending the Board review and comment on the Traffic Model Update major assumptions as shown in Attachment A that will be used to establish Achievable Development, 2025 No-Project, and 2035 Project/No Project land use forecasts for use in updating the El Dorado County Travel Demand Model as described in the Kimley-Horn & Associates, Inc.’s Technical Memorandum #10: Land Use Assumptions. |
| 03/27/2012 |
21 |
12-0267 v2 |
Chief Administrative update of the Land Use Policy Programmatic Update (LUPPU). |
| 02/27/2012 |
2 |
12-0267 v2 |
Chief Administrative Office providing a status report and requesting discussion and direction on the Land Use Policy Programmatic Update (LUPPU) including the following:
1) Targeted General Plan Amendment;
2) Housing Element Amendment;
3) Zoning Ordinance Update; and
4) Travel Demand Model Update. |
| 01/24/2012 |
36 |
11-1441 v2 |
Chief Administrative Office recommending the Board authorize the Purchasing Agent to execute Agreement 396-S1211 with Kimley-Horn and Associates, Inc. to update the County’s current Traffic Model for an amount not to exceed $379,495 for a two year term, upon review and approval by County Counsel and Risk Management. |
| 12/19/2011 |
4 |
11-1441 v1 |
Department of Transportation recommending the Board receive an update and provide direction on the Traffic Model Update. |
Travel Demand Model Assumptions, Methodology, and Reports
Other Related Documents
- Traffic Analysis Macro Micro Flow Chart(PDF, 271KB)
- Travel Demand Model Flowchart(PDF, 49KB)
- TDM/CIP/TIM Fee Update Process(PDF, 161KB)
- Traffic Demand Model Needs Assessment December 2011(PDF, 375KB)
- 9-1-2015 Staff Memo to the Planning Commission(PDF, 11MB)
- TDM Workshop Presentation 2-24-2014(PDF, 3MB)
- Travel Demand Modeling Presentation Public Workshop 6-28-2012(PDF, 4MB)
- Traffic Analysis Zone Design Presentation EDAC Travel Demand Working Group 6-27-2012(PDF, 8MB)
- Executive Summary Draft TDM Results for 5-Year CIP Update 08-15-2013(PDF, 4MB)
- AAA "Effective Speed Zoning, Why and How" Booklet(PDF, 2MB)
- Caltrans Transportation Concept Report and Corridor System Management Plan for US Route 50 - June 2014(PDF, 5MB)
- Caltrans Concurrence Letter 9-22-2014(PDF, 37KB)
- SACOG Concurrence Letter 2-3-2014(PDF, 2MB)
Contact
If you have questions on the Travel Demand Model, or to request the current TDM files for project development purposes, please contact:
Zach Oates
Senior Civil Engineer
zach.oates@edcgov.us
(530) 621-7580 (Direct)
(530) 621-5900 (Main)