RFP E&TS: Citywide Speed Limit Assessment
SCOPE OF WORK
GENERAL:
The Scope of Work is not definitive and is intended only as a guide to illustrate the minimum project requirements.
The selected Consultant shall do the Engineering and Traffic Survey work in accordance with the State of California Department of Transportation Manual for Setting Speed Limits, CA MUTCD, CVC, and any other applicable guidance, including all recent changes in law and best speed management practices. The Consultant shall prepare speed limit recommendations for all roadway segments. This recommendation shall consider all recent legal (including AB 43) and best practice guidance for establishing speed limits and shall consider opportunities to reduce speed limits where appropriate. Any recommendations for speed limit reductions under AB 43 shall be identified and subject to approval by the City.
Each radar gun used for speed surveys shall be certified that it meets and/or exceeds all of the manufacturer's specifications by an authorized entity, distributor, or repair facility acceptable to the City. Proof of certification must be included in the proposal.
PROJECT TASKS:
The Consultant shall provide all necessary services to perform the following tasks:
1) Kick-off Meeting
2) Data Collection
a. The Consultant shall conduct bi-directional vehicle speed (radar) surveys for 186 speed zones within the City of Orange. The number of speed zones shall be confirmed according to the City's Master Plan of Streets and Highways and the latest California Road System (CRS) Map. While taking the speed measurements, the traffic speeds should not be altered by law enforcement, the surveyor and equipment, or any other means. Radar that is capable of accurately distinguishing and measuring unimpeded speed of free-flowing vehicles may be used. Surveys shall not be conducted on Fridays, weekends, Mondays, or during peak traffic hours. Speed measurements should be taken in periods in which the pavement is dry and the weather is fair. The minimum sample size should be at least 100 vehicles per location. For the two-way streets, at least 50 counts for each direction at each location shall be collected. No specific vehicle combination is required. Provide the radar speed survey field sheets (with raw data) and preliminary radar speed survey analysis sheets for each surveyed speed zone. Please Note: If speed survey data seems either unusually high or low, the City may require such locations to be resurveyed at no additional cost to the City. b. The City will be collecting average daily traffic (ADT) volume counts for all speed zones and will provide this data to the Consultant.
c. The Consultant shall collect and analyze collision data as required in the California Manual for Setting Speed Limits and CA MUTCD for the most recent five (5) years available.
Property Damage Only (PDO) crashes shall be included in the collision data collection and analysis. The Consultant shall coordinate with Crossroads Software Traffic Collision Database, as needed, to obtain collision data. Collision data shall be reported as total collisions, annual collision rate, as well as actual collisions per million vehicle miles and RFP E&TS: Citywide Speed Limit Assessment
average. The actual collision rates shall be calculated and compared with the State of California average collision rates for similar roadways and street segments. d. Conduct field reviews of each of the 186 speed zones. The field reviews for traffic factors shall be conducted while school is in session. Provide a field review summary sheet for traffic factors, roadway factors, roadway geometry, and adjacent land uses, etc. 3) Speed Limit Recommendation
a. Determine the appropriate speed limit for each speed zone following the latest requirements from the CA MUTCD and the CVC. When determining the speed limits, the Consultant must also review the latest methodologies. If any reduction from the 85th percentile speed is recommended, these shall be fully documented and follow the procedures required by the State of California in setting speed limits. The Consultant shall provide radar speed survey analysis sheets signed by a qualified Registered Civil Engineer/Traffic Engineer licensed in the State of California for each surveyed speed zone.
Consultant shall prepare a summary of recommendations in Microsoft Excel form to include the street name, street segment, existing speed limit, recommended speed limit, 85th percentile speed, mean speed, 10 mph pace range, percent of vehicles in pace, date of survey, and reason for speed limit change from the 85th percentile. The summary of recommendations shall include all speed zones studied, unless otherwise specified by City staff.
b. Consultant shall provide a frequency histogram and a cumulative frequency curve diagram for each speed zone.
4) Project Report
a. Prepare a report which includes the following:
i. Radar speed survey operational procedures,
ii. A description of the purpose and methodology of speed zone establishment, iii. A description of the statistical analysis factors, iv. A traffic collision data summary table by street segment, v. Results and recommendations, and
vi. The summary of recommendations in Microsoft Excel form. vii. The final report shall be stamped and signed by a qualified Registered Civil Engineer/Traffic Engineer licensed in the State of California. viii. As part of the report preparation the selected Consultant may present at two (2) public meetings to report out the study findings and recommendations. All procedures and speed limit recommendations shall be per the latest requirements in CA MUTCD plus the latest law in the most current version of the CVC. 5) Sign Change Sketch Preparation (Optional Task)
a. Consultant shall prepares sketches for sign changes. This task is based on the number of sign-posting locations where changes are recommended by the Consultant. Once all recommendations are confirmed by the City, this task may or may not be required by the City. In the fee proposal, please list the unit price to identify each sign location at a specific distance from the nearest curb extension. These changes will indicate if the sign is new, a replacement, and/or removal and if a new sign (only) or a new sign and post will be RFP E&TS: Citywide Speed Limit Assessment
required. City staff would then use such sketches to write-up each work order for sign change. Sketches shall be done in a manner acceptable to the City and using the City's formats. Sketches shall be done by attaching digital aerials photos into AutoCAD files and showing the sign post changes from the nearest curb return extension. This task (No. 6) needs to be listed in Fee Proposal as a separate item with a price per unit cost listed for the recommended locations. The City reserves the right to issue or not issue this task or a portion of it.
DELIVERABLES:
Deliverable shall include the following:
1) Task 1: Kick-off Meeting
a. Meeting agenda, to be provided to the City at least three (3) business days prior to the kick- off meeting.
b. Meeting notes
2) Task 2: Data Collection
a. Radar speed survey field sheets containing raw data for each of the 186 speed zones. b. Collision data (past five (5) years) for each speed zone. Collision data shall include PDO crashes. The Consultant shall coordinate with Crossroads to obtain collision data. c. Documentation of any locations that required resurveying and associated results. d. Field review summary sheets for each of the 186 speed zones documenting survey locations and field conditions, including observed traffic factors, roadway characteristics, adjacent land uses, and other relevant data collected.
3) Task 3: Speed Limit Recommendation
a. Radar speed survey analysis sheets with frequency histogram and cumulative frequency curve diagram for each speed zone. Each sheet shall be stamped and signed by a qualified Registered Civil Engineer/Traffic Engineer licensed in the State of California. i. A meeting shall be held with City staff for review prior to the finalization of all 186 analysis sheets.
b. A Microsoft Excel summary of recommendations (sample attached) that includes:
i. Street name and segment
ii. Existing and recommended speed limits
iii. 85th percentile speed, mean speed, 10 mph pace range, and percent of vehicles in pace
iv. Date of survey
v. Reason for any change from the 85th percentile speed c. Documentation of applied methodology, including any changes from prior studies and compliance with the CA MUTCD and the CVC.
4) Task 4: Project Report
a. 90% Draft Report
Proposal
Traffic Engineering Services:
Citywide Speed Limit Assessment
January 6, 2026
211 Imperial Highway, Suite 208, Fullerton, CA 92835 || (714) 992-4592 || [email protected]
AGA Engineers, Inc.
211 Imperial Highway, Suite 208, Fullerton, CA 92835
(714) 992-4592 Email: [email protected]
January 6, 2026
Mr. Jose A La Torre
Transportation Analyst
City of Orange
300 East Chapman Avenue
Orange, California 92866
RE: Proposal to Conduct Engineering & Traffic Surveys for 186 Segments in the City of Orange
Dear Mr. A La Torre:
In response to the City’s Request for Proposal (RFP) dated December 9, 2025, AGA Engineers, Inc. (AGA) is pleased to present to you this proposal to provide an Engineering and Traffic Survey (E&TS) for 186 locations in the City of Orange. Our Proposal is being submitted via email as directed in the RFP.
It is understood that the City will provide Average Daily Traffic (ADT) counts. Radar speed survey data will be collected by our data collection subconsultant, National Data & Surveying (NDS).
AGA acknowledges that our proposal is in accordance with the Terms and Conditions of the previously executed On-Call Professional Services Agreement No. AGR-7488.C between the City and AGA.
The AGA Project Team looks forward to working with the City of Orange on this important project. If you have any questions on any aspect of this proposal, please feel free to contact me at [email protected] or (714) 992-4592.
Respectfully submitted,
AGA Engineers, Inc.
Ruben Perales, P.E., T.E.
Vice President
Citywide Speed Limit Assessment
Page i
Table of Contents
1. Project Understanding and Approach .................................................................................................... 1 Project Understanding ..................................................................................................................... 1 Project Approach ............................................................................................................................. 1
2. Relevant Project Experience, Qualifications, and References ................................................................ 5 Previous E&TS Experience ............................................................................................................... 5 Project Team .................................................................................................................................... 6 References ....................................................................................................................................... 7
3. W
ork Progress Activity Schedule ............................................................................................................ 7
4.Cost Proposal .......................................................................................................................................... 8 A
ppendix – Resumes of the AGA Team
Citywide Speed Limit Assessment
1. Project Understanding and Approach
Project Understanding
The objective of Engineering and Traffic Surveys (E&TS) is to review the City’s existing speed limits to validate and/or recommend changes (increase, decrease, or no change) in accordance with the requirements of the State of California, Department of Transportation, California Manual on Uniform Traffic Control Devices (CA MUTCD), Part 2B.13 (Speed Limit Sign), and CVC 627 and 40802, and sections 22348 through 22413. The study will provide sufficient information to document that the conditions of the latest edition of CVC Section 627 have been satisfied and that other conditions not readily apparent to a motorist are properly identified.
Assembly Bill No. 43 (AB 43) amended and added sections to both the CVC and the latest version of the CA MUTCD related to traffic safety and speed limits. The following are key highlights:
• Allows prima facie speed limit of 25 mph on State highways located in any business or residential district.
• Authorizes Caltrans and a local authority to declare a speed of 20 or 15 mph on State highways. • Authorizes a lower speed limit on a section of highway contiguous to a business activity district.
Definition of “business activity district” is identified in AB 43 text. • Authorizes a local authority to further reduce the speed limit beyond the 5 -mph reduction after June 30, 2024, if certain conditions are met.
• Extends the validity of speed surveys from 10 years to 14 years if evaluated by registered engineer. • Local authority may, by ordinance, retain the current speed limit or restore the immediately prior speed limit if that speed limit was: (1) established with an engineering and traffic survey, and (2) if a registered engineer has evaluated the section of highway and determined that no additional general purpose lanes have been added to the roadway since completion of the traffic survey that established the prior speed limit.
• Review City’s Local Roadway Safety Plan ( LRSP), SCAG’s High Injury Network (HIN), and Transportation Injury Mapping System (TIMS) to determine designated “Safety Corridors”.
The product of the study will be a legal document which will be acted on by the City Council to formally adopt and/or change specific speed limits at the surveyed locations. The report will be the document used by both the Police Department and the local courts in the day -to-day legal defense activities of the established speed limit.
Project Approach
Based on our extensive experience in conducting E&TS for various agencies throughout the years, the following is the AGA Team’s scope of work for the project. All work under this contract will be performed under the direction and supervision of a qualified Registered Civil Engineer/Traffic Engineer licensed in the State of California.
Task 1.Kick-Off Meeting
AGA will coordinate and conduct a kick-off meeting at City Hall with both City and Police Department staff.
At this meeting, the project objectives will be clarified, the project schedule will be finalized, and specific requirements will be discussed. The City will provide any pertinent data needed for analysis. AGA will Citywide Speed Limit Assessment
prepare and distribute an agenda three days prior to the meeting and submit meeting minutes and a participant list within a week after the meeting.
Deliverables:
• Meeting agenda
• Meeting minutes
Task 2. Data Collection and Field Review
The vehicle speed surveys will be conducted in accordance with the 2020 California Manual for Setting Speed Limits published by the Division of Traffic Operations of the California Department of Transportation, the CVC, and the CA MUTCD. AGA’s subconsultant, National Data & Surveying (NDS), will be conducting the radar speed surveys . We understand that the ADT counts for all segments will be provided by the City . As an added value to the City of Orange , AGA will prepare a citywide ADT map to summarize the ADT counts provided by the City.
A minimum of 100 bidirectional speed observations, with a minimum of 50 observations for each direction of travel will be obtained for the designated c ity street segments. Obtaining a minimum of 100 speed samples for each street segment will ensure that there will be a 95% probability that the sample data represents the population data for this type of study and the actual behavior of the majority of motorists.
The studies will only be conducted during “good weather” conditions on weekdays (Tuesday – Thursday) during the off -peak hours of 9:00 AM to 4:00 PM when school is in session, unless other specific time limits are specified by the City. Each speed zone will be surveyed for representative free flow speeds; that is, speeds not influenced by inclement weather, temporary conditions, or construction work. The survey will utilize a traffic radar gun which is calibrated and certified periodically to achieve and maintain accuracy.
The field survey data will be marked on a radar speed survey field sheet and will contain the following roadway segment information:
• Adjacent land use types • Lane configuration
• Roadway geometrics • Median type
• On-Street Parking • No Parking/Stopping restrictions
• School Zone • Truck Route
• Bike Route • Bike lane facilities
• Pedestrian and bicycle activity • General Comments
Collect Traffic Collision Data and Calculate Collision Rates The AGA Team will evaluate the most current mid -block collision history ( five years) for each of the segments. AGA will coordinate with City staff and the Crossroads Software Traffic Collision Database to obtain the collision data. For collision history analysis purposes, mid-block collisions are defined as those occurring outside of the 150 -foot radius of signalized intersections of the roadway segment being analyzed. This criterion excludes collisions that may be traffic signal related in nature. The mid -block collision rate in terms of “collisions per 1,000,000 vehicle miles of travel” for each segment surveyed will be calculated and shown on the Engineering and Traffic Survey summary sheets.
The following shows the collision rate calculation:
Citywide Speed Limit Assessment
Collision Rate = Number of midblock collisions x 106
24-hour volume x 365 x segment length x number of years Where:
• Number of mid-block collisions based on a minimum of five years • 24-hour volume (both directions) for the survey segment • Segment length in miles
A minimum of five years of collision data will be utilized to develop Actual Collision Rates for comparison to the Average Expected Collision Rates which is detailed in the 20 23 Crash Data on California State Highways published by the California Department of Transportation. The Average Expected Collision Rates per roadway type are summarized below. Average Daily Traffic (ADT) counts will be used to determine collisions rates per vehicle miles traveled.
Roadway Type Average Expected
Collision Rate
Conventional 2 lanes or less (< 45 mph) 1.07
Conventional 2 lanes or less (> 45 mph) 0.61
Undivided 4 lanes (<45 mph) 0.66
Undivided 4 lanes (> 45 mph) 0.77
Divided 4 lanes (< 45 mph) 0.64
Divided 4 lanes (> 45 mph) 0.93
Divided 5 lanes or more (< 45 mph) 0.75
Divided 5 lanes or more(> 45 mph) 0.87
Field Review of Roadway Segments
A licensed Traffic Engineer will review all project segments to determine any roadway conditions not readily apparent to motorist s which would justify changing the proposed speed limit to the maximum permitted under State established guidelines. These characteristics include the following:
• Street width and alignment • Traffic flow
• Channelization and striping patterns • Frequency of driveways • Reversed super elevation • Visibility obstructions
• Roadside land use • Roadway grade
• Heavy pedestrians and/or trucks • On-street parking
The product of this review will be a summary of each of the segments and identification of the segments which justify consideration for maximum increase/decrease of the recommended speed limits. In addition to reviewing the roadway conditions not readily apparent to motorists, the AGA team will review the locations of existing speed limit signs and will provide recommendations on any relocations or additions of speed limit signs.
Deliverables:
• Radar Speed Survey Sheets with raw data for all segments • Collision data from the Crossroads database
• Documentation of locations needing resurveying
Citywide Speed Limit Assessment
• Engineering & Traffic Survey Summary Sheets for all segments
Task 3. Speed Limit Recommendations
The speed survey data will be summarized in a Segment Spot Speed Summary Table. This table includes the recommended speed limit for the street segment based on the 85 th percentile speed and any justifications for setting the speed limit lower than the recommended 85 th percentile speed. A City approved Engineering and Traffic Survey template will be utilized to summarize our findings and document all data collected and calculated. At a minimum, this table will include the following:
• 85th percentile speed (critical speed)
• 15th percentile speed
• 10 mph pace speed range
• Number of vehicles in the 10-mph pace speed range
• Percentage of vehicles in the pace speed range
• Mean speed
• Median speed
• Mode speed
• Average vehicle speed
• Standard deviation
Deliverables:
• Radar speed survey sheets
• Summary sheets in Microsoft Excel
• Documentation of applied methodology and compliance with CA MUTCD and CVC
Task 4. Project Report and Presentations
After compiling all pertinent data on the Segment Spot Speed Summary Table, and the Engineering & Traffic Survey Sheets for all project segments, AGA will submit all survey sheets to the City of Orange for review. AGA will discuss the findings with City staff and will review any comments/questions City staff may have on recommendations shown on the survey sheets. As part of this discussion, AGA will identify corridors that may be designated as “Safety C orridors” and/or “Business Activity District” corridors . The latest edition of the CA MUTCD (Revision 9 ) includes guidelines to assist with the designation of such corridors.
A draft report documenting the Engineering and Traffic Study will be submitted to the City for review. It will summarize the existing speed limits and the recommended changes (increase, decrease, or no change) in accordance with the requirements of CVC Sec tions 627, 40802(b), 22357, 22358, and AB 43 (included in the CVC and CA MUTCD). AGA will also document any changes in the guidelines based on the current California Manual for Setting Speed Limits and the current California Manual on Uniform Traffic Contr ol Devices, if any.
The report will be a legal document to formally adopt or change speed limits at the surveyed locations. It will include an executive summary, a summary of recommendations in a tabular format for ease of reference, specific recommendations with a descriptio n of the basis for that recommendation for each roadway segment surveyed, and all other supporting data.
Citywide Speed Limit Assessment
At a minimum, the report will include the following:
• Radar speed survey operational procedures
• Description of the purpose and methodology of Speed Zone establishment, including a discussion of realistic speed zoning, speed traps, CVC requirements, etc. • Description of the statistical analysis factors
• Description of the field data used in analyzing related roadway characteristics • Collision history for the street segments
• Results and recommendations
• Summary of recommendations in both narrative and table form
A meeting with City staff will be held to discuss the analysis results presented in the Draft E&TS Report.
AGA will address and incorporate the City’s consolidated comments on the draft report into the final report which will be provided to the City in both hardcopy and electronic formats. Another meeting with City staff will be conducted for the presentation of the Final E&TS Report.
Traffic Commission and City Council Meetings
AGA will be available to attend one Traffic Commission meeting and one City Council Meeting to assist the City of Orange staff with presenting the speed survey results. We will also respond to any questions that Commission/Council members may have.
Deliverables:
• 90% draft report
• Final report
• Public meetings (up to two meetings)
Task 5. Sign Change Sketch Preparation (Optional Task)
As part of the field review in Task 2, the AGA team will assess the existing speed limit signs and provide recommendations on any relocations, additions, and/or changes. If authorized by the City, we will design the sign-posting at the locations which are confirmed by the City. The plans will indicate the distance from the curb extension, whether the sign is new, a replacement, or a removal, and if a post will be needed.
Aerial photos of each location will be included on the sketches. The sketches will be completed in AutoCAD using the City’s preferred format.
Deliverables:
• Sign change sketches with aerial photos
2. Relevant Project Experience, Qualifications, and References
Previous E&TS Experience
We fully understand the importance of dealing with traffic -related situations, including determining the appropriate posted speeds along the City’s corridors. Staff at AGA have completed many tasks similar or identical to those anticipated under this contract, and have completed such tasks on time, within budget, and in a manner that meets all the requirements of the agency for which the work was completed, while at the same time placing minimal time and effort requirements on agency staff.
Citywide Speed Limit Assessment
The AGA Team possesses all of the necessary capabilities and experience to complete the proposed project in a professional, timely, and cost-effective manner. The AGA Team has a long history of conducting E&TS projects for cities throughout Southern California. Within the last five years, the AGA Team has conducted speed surveys for the following cities:
Buena Park Burbank Costa Mesa Fountain Valley Garden Grove Gardena Huntington Beach Laguna Niguel Redondo Beach Santa Ana Seal Beach Tustin Westminster Whittier
Additionally, we are currently finalizing speed surveys for the cities of:
• Santa Clarita
• Yorba Linda
Project Team
Strong results-oriented leadership is a key element of AGA’s management approach to fully leverage the expertise and experience of our team members. Mr. Ruben Perales, P.E., T.E., as the Project Manager will be responsible for the day -to-day direction
and management of each element of work
being completed as a part of the project.
Project team meetings will be held regularly
to ensure that work is proceeding
appropriately in a timely fashion. Mr.
Perales will be responsible for adherence to
the project schedule and for maintaining
quality control of all project work products.
In short, Mr. Perales will do everything
necessary to ensure that the project is
completed on time, within budget, and in a
manner that fulfills all the goals and
objectives of the City of Orange. AGA
proposes to utilize experienced senior staff
members to conduct this project. Our
Organizational Chart is to the right.
Resumes are included in the Appendix.
Our subconsultant responsible for data collection will be National Data and Surveying Services (NDS).
Founded in 1989, NDS leads the industry as the largest traffic data collection firm, transit data collection firm, and GIS data collection firm in the nation. NDS has an incredibly large capacity to conduct well over two thousand traffic counts every sin gle day and unparalleled technical expertise in their industry. NDS clientele includes private engineering firms, public agencies, regional planning organizations, retail outlets, private companies, and private cit izens. NDS has been part of our team for many of the E&TS projects we have conducted.
Our experienced QA/QC Manager will conduct an objective review of the work product. When several disciplines are involved in a project, the QC Manager may also seek review assistance when needed from Ruben Perales, P.E., T.E.
Vice President
Project Manager
Engineer of Record
Support Staff
Jessica Reyes, P.E.
Sr Transportation Engineer
Jorge Sanchez, E.I.T.
Associate Transportation
Engineer I
Giselle Hernandez
Associate Transportation
Engineer I
Na�onal Data & Surveying
Ruben Gallegos
Data Collec�on
Chalap Sadam, P.E., T.E.
President
QA / QC
Manager
Citywide Speed Limit Assessment
other individuals specializing in those disciplines to verify that all project concepts are being met and all constructability issues are addressed prior to delivery of the project.
Quality assurance defines the process utilized for each project to guarantee that the design deliverables are accomplished in accordance with the project objectives. To achieve the desired quality of deliverables and services, quality assurance consists of several systems including initial implementation of a Quality Control Program, conducting quality audits to verify conformance with policies and procedures, and quality assurance reports.
The independent senior staff assigned to the project will identify problems, recommend solutions, and verify implementation of corrective action. The Project Manager will ensure that quality is achieved and fully supports the verification efforts by independent personnel. The Project Manager will interface with the project staff members for resolution of matters related to quality.
Client satisfaction is a key project goal. We emphasize client satisfaction throughout all phases of work.
We monitor client feedback and satisfaction as a corporate objective. Document control, records control, and corrective/preventative actions are the minimum procedures we provide for every project.
References
The following is project information and references for E&TS studies our team has conducted within the last five years. All the projects listed below included the following tasks: radar surveys conducted under free flow conditions, evaluation of the accident history, field review by a licensed engineer, and recommendations for changes in speed limits developed. The survey data was then compiled into summary tables and a report prepared to be used as a legal document by cities and courts.
City of Santa Ana
Mr. Zdenek “Zed” Kekula, Principal Civil Engineer
20 Civic Center Plaza, Santa Ana, CA 92702
(714) 647-5606 || [email protected]
November 2022 – March 2023
177 segments surveyed
City of Fountain Valley
Mr. Temo Galvez
Deputy Director of Public Works/City Engineer
10200 Slater Avenue, Fountain Valley, CA 92708
(714) 593-4517 || [email protected]
March – June 2024
92 segments surveyed
3. Work Progress Activity Schedule
Our proposed schedule is shown on the following page. A detailed schedule will be provided at the Project Kick-Off Meeting.
City of Garden Grove
Mr. Juan Navarro, City Traffic Engineer
11222 Acacia Parkway, Garden Grove, CA 92842
(714) 741-5186 || [email protected]
August – December 2021
143 segments surveyed
City of Buena Park
Mr. Nader M. Alqam, Principal Engineer
6650 Beach Boulevard, Buena Park, CA 90622
(714) 562-3698 || [email protected]
January – August 2025
81 segments surveyed
Citywide Speed Limit Assessment
4. Cost Proposal
Our Cost Proposal is included below . The table shows a detailed breakdown of staff hours by task and classification, hourly rates, and any subconsultant costs. Our rates are all inclusive. All direct and indirect costs (i.e., mileage, equipment, materials, reproduction and printing, etc.) are included in our fees.