201CALTRANS TAR INTERNAL ASSESMENTRESULTS
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201Caltrans TAR Internal AssesmentResults
Table of Contents Introduction 1. Summary of Results …………………………………………………………………………………………… 1 Analysis Results 2. Blank Survey …………………………………………………………………………………………………… x 3. Summary by Question ………………………………………………………………………………………… x 4. Summary by District …………………………………………………………………………………………… x 5. DetailedSurveyResults …………………………………………………………………………………………… x 6. Individual Responses …………………………………………………………………………………………… x 7. Customer Satisfaction…………………………………………………………………………………………… x
1 Summary of Results
Caltrans GAP Analysis
Introduction
1. Summary of Results
Over the past two years, Caltrans has been actively
developing new materials to provide guidance for
transportation analysis. The main product of this effort
to date is the Draft Transportation Analysis Report (TAR)
Annotated Outline and Guidelines. The outline and
guidelines were developed to provide the Department with
standard reference materials for preparing transportation
analysis especially in support of CEQA and NEPA documents
for state highway projects. Use of this guidance material
is intended to establish consistent content and formats
to comply with state and federal requirements to support
both engineering and environmental compliance. It will
also facilitate streamlined reviews of reports and assist in
achieving quality review objectives.
Before implementation of the new guidance material
occurs, Caltrans is conducting a “gap analysis” or needs
study to identify where the Department’s transportation
analysis practice is relative to the ‘state of the practice’
level identified in the Draft TAR Outline and Guidelines.
This document contains the results of the first step in that
process, which involved a web-based internal survey to
help gauge what, if any, gaps exist in tools, software, skills,
staffing, and training that should be addressed as part
of implementing the TAR Outline and Guidelines. This
information is just one part of the overall needs study
that will be supplemented with additional assessment
information collected from each district.
The initial results are not statistically valid as the sample
was relatively small, but it does contain results from all
the districts plus headquarters and represents multiple
perspectives within the districts such as environmental,
planning, design, traffic operations, and travel demand
forecasting. While the survey was completed by individuals,
they were instructed to respond to the questions on the
basis of evaluating their district/unit. This perspective
should be used when reviewing the results in the following
pages.
Caltrans GAP Analysis Results | 1
Results
For projects in your District, what approach is most
commonly used to establish and justify study limits for
PA&ED transportation analysis?
20.5%
No justification 0
43.2% Single technical person decides based on 9
their expertise
Collaborative technical group decision based 19
on their collective expertise
Technical analysis based on area affected by 16
changes in traffic volumes and patterns
answered questions 44
skipped questions 8
36.4%
For projects in your District, what approach is most
commonly used to establish and justify study scenarios
and analysis assumptions or parameters for PA&ED
11.9% 21.4% transportation analysis?
38.1% No justification 0
Single technical person decides based on 5
their expertise
Collaborative technical group decision based 9
on their collective expertise
Collaborative technical group decision based on supporting 12
need and purpose
Collaborative technical group decision based on supporting 16
28.6% need and purpose and substantial evidence in the form of
technical analysis or technical reference documentation
answered questions 42
skipped questions 10
For projects in your District, are the transportation analysis
scenarios used for the PID/PSRphase document usually the
same as those used in the PA&ED document?
30% 70%
Yes 28
No 12
answered questions 40
skipped questions 12
For projects in your District, what information is routinely
included in data collection efforts for conducting a PA&ED
phase transportation analysis (check all that apply)?
1. Intersection turning movement counts 36
2. Roadway segment counts 38
95% 3. Truck Volumes (i.e., vehicle classification counts) 34
4. Speeds 28
5. Travel time 24
6. Transit routes, service, and ridership 6
7. Collision data (i.e., TASAS, SWITRS) 38
8. Bicycle facilities 15
9. Pedestrian facilities 15
10. Truck data/freight information 10
11. Parking data 3
12. Multi-modal facility information 8
13. Traffic control: signs, markings, signal timings, etc. 27
answered questions 40
skipped questions 12
For projects in your District, what data sources are used for
existing traffic volume counts?
11.9% Caltrans Highway Congestion Monitoring Report (HiCOMP) 0
38.1% California Freeway Performance Measurement System (PeMS) 6
Caltrans traffic data branch estimates (i.e., the website) 12
Caltrans Division of Transportation Systems Information Data 2
Reports
Project specific counts 17
21.4%
28.6% answered questions 37
skipped questions 15
In your District, what ability exists to conduct the following
types of transportation analyses?
Advanced
Proficient
Proficient, but experience/skill level declining
Still Developing
No Experience
1. Data Collection 3. Travel Demand Forecasting 5. Traffic Safety 7. Multi-Modal
2. GIS 4. Traffic Operations 6. Non-Motorized 8. Traffic Simulation
In your District, what ability exists to conduct the following
travel demand forecasting work?
Advanced
Proficient
Proficient, but experience/skill level declining
Still Developing
No Experience
1. Develop traffic volume growth factors 5. Estimate, calibrate, and validate new models 9. Extract origin-destination trip tables 13. Apply CAL B/C
2. Run existing travel demand models 6. Apply the Ds 10. Develop adjusted traffic volume forecasts 14. Evaluate induced travel effects
3. Modify existing travel demand models 7. Develop land use forecasts 11. Develop truck/freight forecasts
4. Calibrate and validate sub-area models 8. Apply land use models 12. Apply commodity flow models
In your District, what ability exists to prepare transportation
impact analysis for NEPA and CEQA documents including
developing appropriate impact statements and
recommending mitigation measures for the following
transportation topics?
Advanced
Proficient
Proficient, but experience/skill level declining
Still Developing
No Experience
27% In your District, what ability exists to perform model runs
for large travel demand models (i.e, statewide model, SCAG
10.8% model, SACOG model, etc.)?
35.1%
Advanced 10
Proficient 13
Proficient, but experience/skill level declining 4
Still Developing 6
16.2%
No Experience 4
10.8% answered questions 37
skipped questions 15
In your District, what ability exists to create and publish
TAR documentation and graphics?
Advanced
Proficient
Proficient, but experience/skill level declining
Still Developing
No Experience
In your District, re sufficient computing and technical
39.4% resources available to keep large travel demand model run
times acceptable?
Yes 13
No 20
answered questions 33
60.6% skipped questions 19
65.8% In your District, are all project team members (i.e.,
forecasting, traffic operations, design,etc.) in close physical
proximity to allow for daily collaboration?
Yes 25
No 13
answered questions 38
34.2%
skipped questions 14
In your District, are engineers and planners cross-trained
in various aspects of travel demand forecasting, traffic
74.4% operations analysis, roadway design, and environmental
impact assessmentt?
Yes 10
No 29
answered questions 39
skipped questions 13
25.6%
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