Resources, links, facts and news
Resources: the links, standards and facts we work from
Authoritative sources for agencies, partners and anyone evaluating intelligent transportation technology. Every link goes to the primary source. Headlines refresh from industry feeds.
Facts we cite
Numbers with sources
Figures that appear across this site, each with where it comes from.
| Fact | Figure | Source |
|---|---|---|
| Intersections in the United States | About 3 million, roughly 300,000 signalized | FHWA Signalized Intersections Informational Guide |
| Intersection share of fatalities and injuries | About one quarter of fatalities, one half of injuries | FHWA Intersection Safety |
| Traffic fatalities, 2024 | 39,345, down 3.8 percent from 2023 | NHTSA |
| Cost of congestion | $269 billion per year; 63 hours per commuter | TTI 2025 Urban Mobility Report |
| National V2X plan milestones | By 2028: 20% of the National Highway System and 25% of signalized intersections in the top 75 metros. By 2031: 50% of each. By 2036: 75% of the NHS | USDOT V2X Deployment |
| C-V2X spectrum | 5.895 to 5.925 GHz, three 10 MHz channels; DSRC sunset | FCC 24-123 |
| ITS deployment benefits | Adaptive signals cut delay 19 to 44 percent; ramp metering cut crashes 5 to 50 percent; incident management cut incident delay 50 to 60 percent | USDOT ITS benefits database |
| Agencies deploying connected-vehicle technology | 78% of freeway agencies and 63% of transit agencies developing, testing or deploying (2023 survey) | ITS Deployment Tracking Survey |
| State environmental sensor stations | More than 2,400 | FHWA ESS map |
| U.S. tolling footprint | 33 states, 133 operators, 352 facilities, 6,700 centerline miles, more than $23 billion in annual revenue | IBTTA TollMiner, 2025 presentation |
| E-ZPass | 20 states, more than 64 million devices | E-ZPass Group |
| Toll-road miles (federal inventory) | About 6,288 miles of toll roads plus 337 miles of toll bridges and tunnels (2023) | FHWA Toll Facilities |
Live headlines
Transportation technology news
Pulled from ITS America, ITS International, Transport Topics, Smart Cities Dive and USDOT feeds. Headlines link to the publisher.
- 3 transit leaders explain how they fund major projectsSmart Cities Dive
- UK council measures speed with data not radarITS International
- Safety Cameras on VIA Metropolitan Transit BusesRoads & Bridges
- Eight-fold increase in road safety data messages, says DFRSITS International
- AI Work for InfrastructureRoads & Bridges
- TrafficAuth issues SCMS certificates for Canada V2X workITS International
- 2 bus companies plan to enter US transit market by 2028Smart Cities Dive
- UITP Summit 2027: call for speakersITS International
Headlines gathered October 13, 2026 at build; the hosted site refreshes hourly.
USDOT
ITS Joint Program Office
USDOTITS Joint Program OfficeThe federal ITS research and deployment program: V2X, automation, AI, intersection safety, data and standards.USDOTV2X Deployment programThe national plan to accelerate vehicle-to-everything deployment, the V2X Accelerator sites and resources.USDOTConnected-vehicle deployment locations mapUSDOT's map of connected-vehicle deployments across the country (September 2024).USDOTITS Architecture and Standards programARC-IT, ITS standards, tools and training for architecture-conformant projects.USDOTARC-IT national reference architectureThe Architecture Reference for Cooperative and Intelligent Transportation, with free RAD-IT and SET-IT tools.USDOTITS Deployment EvaluationBenefits, costs, lessons learned and deployment statistics collected since 1999.USDOTITS Professional Capacity BuildingFree training, including the V2X cohort technical assistance program.USDOTIntersection Safety programThe Intersection Safety Challenge and intersection safety system prototyping.USDOTITS cybersecurity resourcesCybersecurity guidance for connected and intelligent transportation systems.USDOTITS DataHub and CodeHubOpen data and open-source code from USDOT ITS research, including the Operational Data Environment.USDOTSmart Community Resource CenterFunding guides, V2X-eligible formula and grant sources and deployment resources.USDOTITS JPO newsProgram announcements, newsletters and events.
FHWA
Operations, systems engineering and tolling
FHWAOffice of OperationsTSMO, ITS deployment, work zones, road weather, traffic incident management.FHWASystems Engineering for ITSThe handbook behind the V-model and the 23 CFR 940 requirement for federally funded ITS projects.FHWAITS deployment and Rule 940 resourcesRegional ITS architectures and systems engineering analysis requirements.FHWAWork Zone Data Exchange (WZDx)The specification and program for sharing work-zone data with vehicles and maps.FHWARoad Weather ManagementEnvironmental sensor stations, maintenance decision support and road weather research.FHWAAutomated Traffic Signal Performance MeasuresGuidance for ATSPM from high-resolution controller data.FHWATMC cybersecurity guidanceTransportation management center cybersecurity aligned to the NIST framework.FHWAAI for transportation systems management and operationsPrimer on artificial intelligence in traffic management.FHWACongestion pricing and priced managed lanesValue pricing projects, HOT and express toll lanes.FHWAToll facilities in the United StatesFHWA's biennial inventory of toll roads, bridges and tunnels.FHWASection 129 general tolling programFederal tolling authority and program administration from the Center for Innovative Finance Support.FHWAATTAIN programAdvanced Transportation Technology and Innovation grants for technology deployment.
Standards and security
What our designs and tests are written to
StandardsNTCIPThe National Transportation Communications for ITS Protocol family, including NTCIP 1218 for roadside units.StandardsITE standards and RSU standardizationInstitute of Transportation Engineers standards program and the roadside unit standard.StandardsSAE J2735 V2X message setThe dictionary of BSM, SPaT, MAP, TIM, PSM, SDSM and other V2X messages.StandardsSAE J3161 LTE-V2X deployment profilesOn-board system requirements for C-V2X direct communications.StandardsIEEE 1609.2 security servicesSecurity services for V2X applications and management messages.StandardsFCC Second Report and Order on 5.9 GHz C-V2XThe November 2024 rules for C-V2X in 5.895 to 5.925 GHz.StandardsNIST Cybersecurity Framework 2.0The framework FHWA guidance maps transportation cybersecurity to.StandardsNIST SP 800-82 Rev. 3Guide to operational technology security: zones, conduits and monitoring.StandardsOmniAir ConsortiumCertification for V2X devices and for 6C, 6B-80K and TDM tolling equipment.StandardsISO 15784-2:2024Centre-to-field SNMP data exchange for ITS roadside devices.
Tolling
Industry and interoperability
TollingIBTTAThe International Bridge, Tunnel and Turnpike Association: industry data, events and the TollMiner database.TollingIBTTA national interoperabilityThe NIOP program, interface control document and business rules.TollingE-ZPass GroupThe interoperable toll collection network across 20 states.TollingOmniAir tolling certificationReader and tag certification for 6C, 6B-80K and TDM.TollingCaltrans electronic toll collectionCalifornia's 6C statewide protocol program.
Community
Associations and research
CommunityITS AmericaThe national ITS industry association.CommunityInstitute of Transportation EngineersProfessional society and standards developer for transportation engineering.CommunityNational Operations Center of ExcellenceAASHTO, ITE and ITS America TSMO resource center with FHWA.CommunityTransportation Research BoardResearch, the annual meeting and the TRID database.CommunityNIST Global Community Technology ChallengeSmart city and community technology collaboration.CommunityOpen Mobility FoundationMobility Data Specification and Curb Data Specification.CommunityTexas A&M Transportation Institute Urban Mobility ReportThe reference on congestion cost and delay.CommunityNHTSACrash data, fatality estimates and vehicle safety programs.
Industry news
Publications we read
NewsITS InternationalInternational ITS industry news.NewsTraffic Technology TodayTraffic technology news and features.NewsRoads & BridgesInfrastructure, ITS and tolling news.NewsToll Roads NewsTolling industry news.NewsSmart Cities DiveSmart city technology and policy.NewsGovernment TechnologyTechnology in state and local government.NewsTransport TopicsFreight and trucking news, including truck parking.NewsAASHTO JournalState DOT news from AASHTO.
External links open the publisher's site. ITS Roads is not affiliated with and does not endorse the organizations listed; they are provided as references.
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