Certification · license to practice
Professional Engineer (PE) — Civil: Transportation
State engineering boards (exams via NCEES) · United States (state-by-state) · License
Requires: ABET-accredited engineering degree; Fundamentals of Engineering (FE) exam; typically 4 years of progressive experience under a licensed PE; PE Civil exam (Transportation depth); ethics exam in some states
Renewal: Every 1-2 years depending on state; 15-30 PDH per cycle typical
Certification · license to practice
Traffic Engineer (California state branch license)
California Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG) · California, USA · License (state title branch)
Requires: Engineering education plus qualifying experience (EIT + 6 years less education credit, or FE waiver with 15-17 years experience); 8-hour California Traffic Engineering exam plus take-home California State Laws and Board Rules exam; fingerprints/background chec
Renewal: Every 2 years
Certification
Chartered Engineer (CEng) via CIHT / ICE
Engineering Council UK (licensed institutions: Chartered Institution of Highways and Transportation, Institution of Civil Engineers) · United Kingdom (international recognition) · Chartered (professional registration)
Requires: Accredited engineering degree (MEng or equivalent via learning outcomes); initial professional development; professional review interview demonstrating UK-SPEC competences
Renewal: Annual CPD obligation; re-registration every ~5 years through institution
Certification · flagship
Professional Traffic Operations Engineer (PTOE)
Transportation Professional Certification Board (TPCB), affiliated with Institute of Transportation Engineers (ITE) · International (US, Canada, others; ~3,767 holders as of Nov 2022) · Advanced (highest certification in traffic engineering)
Requires: 4 years of Professional Traffic Operations Engineering experience; must hold a valid license to practice engineering (PE or equivalent) if residing in a licensing jurisdiction; pass 6-hour PTOE exam; application and 3-year certification fees
Renewal: Every 3 years; 45 PDH of traffic-operations education plus (from 2027 cycle) ethics training requirement
Certification · flagship
Professional Transportation Planner (PTP)
Transportation Professional Certification Board (TPCB), affiliated with ITE · International · Advanced
Requires: Accredited degree plus experience: master's/PhD in planning or transportation + 2 years; bachelor's in planning/transportation + 4 years; any bachelor's + 6 years; any degree/diploma + 8 years; pass 150-question, 6-hour PTP exam
Renewal: Every 3 years via continuing professional development
Certification
Road Safety Professional Level 1 (RSP1)
Transportation Professional Certification Board (TPCB) · International (North America focus) · Foundation
Requires: Bachelor's degree + 2 years experience in transportation/highway safety/public health, OR 4 years experience in those fields; pass 3-hour, 75-question multiple-choice exam covering foundations of road safety, measuring safety, human behavior, solving safety pr
Renewal: 3-year certification cycle; continuing education requirements apply
Certification
Road Safety Professional Level 2 — Behavioral (RSP2B) or Infrastructure (RSP2I)
Transportation Professional Certification Board (TPCB) · International (North America focus) · Advanced specialty
Requires: Successful completion of Level 1 exam (can be taken concurrently); plus bachelor's degree + minimum 5 years professional experience in transportation/highway safety/public health, OR minimum 10 years experience; choose behavioral or infrastructure specialty; p
Renewal: 3-year certification cycle
Certification · flagship
Chartered Transport Planning Professional (CTPP / TPP)
Chartered Institution of Highways and Transportation (CIHT) and Transport Planning Society (TPS); CILT-recognized · United Kingdom (chartered status since Aug 2019) · Chartered
Requires: CIHT, TPS or CILT membership; appropriate learning level (degree or approved alternative); typically 5+ years transport planning experience across varied projects; portfolio of evidence (professional and technical skill units) plus professional review intervie
Renewal: Ongoing CPD and membership
Certification
IMSA Traffic Signal Technician series (Field Technician I/II, Senior Field Technician III, Bench Technician, Inspector)
International Municipal Signal Association (IMSA) · United States/Canada (international) · Technician (tiered)
Requires: Progressive signal experience; IMSA training courses and exams at each level; many public agencies require Level II (Field) as condition of employment or probation completion
Renewal: IMSA certifications carry renewal continuing-education requirements
Certification
IMSA Work Zone Temporary Traffic Control Technician
International Municipal Signal Association (IMSA) · United States/Canada · Technician
Requires: IMSA training course and exam on work zone temporary traffic control; typically required for personnel supervising or implementing MUTCD Part 6 work zone devices
Renewal: IMSA renewal continuing-education cycle
Certification
Airport Certified Employee (ACE) — Operations / Planning & Environmental tracks
American Association of Airport Executives (AAAE) · United States (international recognition) · Professional credential
Requires: AAAE membership; self-study body of knowledge; multiple-choice exam; Operations track covers airfield ops, security, safety; Planning & Environmental track exists per AAAE program structure
Renewal: Continuing education units required for maintenance
Standard · flagship
Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition (with Revision 1)
Federal Highway Administration (FHWA), USDOT; advised by NCUTCD · United States (all public roads open to travel) · National standard (federal regulation reference)
Renewal: MUTCD updated periodically; IIJA 2021 mandates update at least every 4 years (Revision 1 Final Rule March 5, 2026)
Standard · flagship
A Policy on Geometric Design of Highways and Streets (AASHTO Green Book), 7th Edition 2018
American Association of State Highway and Transportation Officials (AASHTO) · United States (international reference) · Industry standard
Renewal: Supersedes 2011 6th edition; item code GDHS-7
Standard · flagship
Highway Capacity Manual (HCM), 7th Edition: A Guide for Multimodal Mobility Analysis
Transportation Research Board (TRB), National Academies of Sciences, Engineering, and Medicine · United States (international reference) · Industry standard
Renewal: Editions 1950, 1965, 1985, 2000, 2010, 2016, 2022
Standard · flagship
AASHTO LRFD Bridge Design Specifications, 10th Edition 2024
AASHTO Committee on Bridges · United States · Industry standard
Renewal: Supersedes 9th edition (2020); 3-year edition cycle since 8th edition
Standard · flagship
ICAO Annex 14 to the Chicago Convention — Aerodromes (Vol I: Aerodrome Design and Operations; Vol II: Heliports)
International Civil Aviation Organization (ICAO) · International (contracting states; national deviations must be notified) · International standards and recommended practices (SARPs)
Renewal: Periodically reviewed by ICAO Aerodromes Panel
Standard · flagship
FAA Advisory Circular 150/5300-13B, Airport Design (Change 1)
Federal Aviation Administration (FAA), Office of Airport Safety & Standards AAS-100 · United States (civil airports; mandatory for federally funded projects) · Federal design standard
Renewal: Change 1 issued Aug 16, 2024; errata as of Apr 3, 2025
Standard
EN 1317 — Road Restraint Systems
CEN (European Committee for Standardization); adopted nationally as BS EN 1317 etc. · Europe (UK, EU) · Harmonized European standard
Renewal: Parts 1-5 plus 6-8 (pedestrian restraint, terminals, transitions)
Regulation · flagship
PROWAG — Accessibility Guidelines for Pedestrian Facilities in the Public Right-of-Way
U.S. Architectural and Transportation Barriers Compliance Board (Access Board); adopted by USDOT and GSA · United States · Federal accessibility regulation
Renewal: Access Board final rule Aug 8, 2023; GSA adopted Jul 3, 2024 (ABA); DOT final rule Dec 18, 2024, effective Jan 17, 2025
Regulation · flagship
FHWA Federal-Aid Highway Program requirements (23 CFR; MUTCD mandate)
Federal Highway Administration (FHWA), USDOT · United States · Federal regulation
Renewal: Ongoing; state DOTs implement via design manuals conforming to federal standards
Regulation · flagship
NEPA environmental review for transportation projects (CE / EA / EIS)
Council on Environmental Quality; implemented by FHWA/FTA/FAA (23 CFR Part 771) · United States · Federal statute and regulation
Renewal: NEPA 1969 (42 USC 4321-4370h); CEQ regs 40 CFR 1500-1508; FHWA implementing procedures 23 CFR 771
Regulation
State DOT design manuals and highway regulations
State Departments of Transportation (e.g., Caltrans, TxDOT, ODOT) · United States (state-by-state) · State regulation/standard
Renewal: Updated on agency schedules
Regulation
NTSB accident investigations and safety recommendations (non-regulatory role)
National Transportation Safety Board (NTSB) · United States (all transport modes) · Federal investigative agency
Renewal: Established 1967; Independent Safety Board Act 1974; Most Wanted List advocacy ended end of 2023
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