Roadside Unit - RSU

Designed to Deliver Exceptional Performance

MobiQ’s RSU integrates with Traffic Signal Controllers and compatible infrastructure to receive critical messages and communicate with vehicles, pedestrians, and interfaces to infrastructure to cyclists to optimize traffic signals and promote safe and efficient traffic flow.

NA Market Performance Requirements:

  • CTI-4001, CTI-4501, NTCIP 1218, VLAN/Proxy
  • 3GPP R14/15 C-V2X, IEEE 1609, SAE J2735, SAE J3161/1

Key Features

  • Future-proof PCB assembly form factor developed for improved thermal and installation integration into rugged RSU enclosures, other infrastructure hardware, with potential for future expansion.
  • MobiQ proprietary V2X application suite.
  • ISO 21434 automotive software cybersecurity compliance.
  • MobiQ unique diagnostic features for RSU Management.
  • SCMS interface for security certificate updates.

Roadside Applications

  • SPAT transmission using TSCBM
  • SPAT, MAP, TIM, RTCM, PSM, etc. (Immediate Forward Messaging)
  • MAP, TIM, etc. (Store and Repeat Messaging)
  • EVP, FSP, TSP and TSC SRM Handling

Connected Intersection Features

  • BSM Forwarding with Filtering
  • Flashing Yellow Arrow Support (SPAT message)
  • Collection and Forwarding of TSC HiRES Data

Smarter Road Travel Made Possible by MobiQ’s RSU

 MobiQ’s Roadside Unit (RSU) System consists of RSU hardware integrated with the Traffic Signal Controller and the State/City agency’s network. It communicates with vehicles equipped with the Onboard Units (OBU) and other capable mobile devices using C-V2X radio systems. MobiQ's RSU also integrates well with intersections using camera and radars to detect vulnerable road users (VRUs) such as pedestrians and cyclists. The RSU can also issue real-time alerts to drivers via roadside dynamic signage messages to vehicles equipped with OBU's and heads-up displays

Functions of the RSU

The Ability to Sense the Road Ahead

The RSU System leverages the power to listen to and broadcast information to traffic signals, OBU-equipped vehicles, roadside dynamic displays and State/City agencies to improve traffic flow, grant signal priority to authorized vehicles, deliver alerts to drivers, send traveler information to agencies and many other applications.

V2X Application Suite

Signal Phase and Timing / MAP

Freight/Transit Signal Priority (FSP/TSP)

Emergency Vehicle Preemption (EVP)

Traveler Information Messages (TIM)

Curve Speed Warning

Speed Compliance /
Work Zone

Oversize Vehicle Compliance

Red Light Violation Warning

Emergency Vehicle Warning

Superior Technology
Built to Outlast and Outperform

Developed according to the stringent quality process DENSO has developed for automotive parts, diffentiating MobiQ’s RSU from competitors.

Quality & Durability

Developed according to the stringent quality process instituted for automotive parts, differentiating MobiQ’s RSU from competitors.


MobiQ’s RSU interoperates with MobiQ’s OBU and other competitors' OBUs that have gone through OmniAir certifications.


MobiQ’s RSU comes with user-friendly GUI for easy configuration and remote management. The RSU supports integration with NTCIP Traffic Signal Controller, and proprietary MIBs communication.

Seamless Integration

The MobiQ RSU integrates seamlessly with vehicle-installed OBU, infrastructure devices that are compliant to C-V2X standards, and agencies’ advanced traffic management systems (ATMS).

Designed for Road and Cyber Safety

Along with the increase of V2X technology, the potential for cyber attack is a rising concern for agencies and manufacturers. MobiQ's compliance with automotive software cybersecurity standards is paramount to ensure robust protection against cyber threats, as well as maintaining confidence in V2X technology. MobiQ products adhere to established cybersecurity standards, safeguarding against unauthorized access, data breaches, and manipulation of critical systems. By prioritizing compliance with these standards MobiQ mitigates the risk of cyber attacks, and contributes to the safety and reliability of connected automotive systems.

MobiQ’s RSU was developed in compliance with:

  • ISO 21434 Automotive Software Cyber Security Standard
  • CTI-4001/CTI-4501

Features to support V2X security:

  • V2X Hardware Security Module (HSM)
  • NIST/Brain Pool ECC up to 512b
  • HSM Storage > 10k keys, 15-year Retention
  • FIPS 140-2 Level 3 / EAL6+

Technical Specifications

The RSU-5940 is a V2X Printed Circuit Board Assembly (PCBA) designed for enabling RSU functionality in Traffic Infrastructure deployment in North America.

Supports latest versions of:

  • NTCIP 1218 v01.38
  • CTI 4001 v01.01 and CTI 4501 v01.01
  • Remote RSU Configuration Management and Diagnostic Features


  • LTE-V2X: 20MHz, IEEE Ch. 183

Antenna Diversity

  • LTE-V2X: RX Diversity (MRC), TX Diversity (CDD)

Max Transmit Power

  • LTE-V2X: Up to +23 dBm

Receiver Sensitivity (single input)

  • LTE-V2X target: -95dBm
  • (MCS 11, 367 octets, HARQ)


  • 2.0m CEP (up to 10Hz)

V2X Security

  • NIST/Brainpool ECC up to 512b
  • HSM storage > 10k keys, 15-year retention
  • FIPS 140-2 Level 3 / EAL6+

Operating System

  • Embedded Linux

Operating Temperature Range

  • -40°C to +85°C (PCBA)
  • Intended for RSU integration compliance with ITE CTI 4001


  • 140mm x 115mm x 35mm

Power Supply

  • 12V ±10% (< 12 Watts)
  • Quad-core ARM A35 @ 1.2GHz + M4 (~9000DMIPS)
  • 256MB QSPI NOR flash
  • 8GB eMMC mass storage
  • LTE-V2X R14/15 radio
  • GNSS for position and timing
  • USB 3.0 (Type-C)
  • USB 2.0 Debug (microB)
  • U.S. (IEEE, SAE) protocols
  • V2X Facilities Software (SAE protocols)
  • V2X Services API (GNSS, V2X Radio)
  • IEEE 1609
  • SAE J2735
  • SAE J2945/1
  • SAE J3161 (LTE-V2X)
  • NTCIP 1218 v01.38
  • SLSS aware
  • LTE-V2X: 5.9GHz ITS (5895 – 5925 MHz)
  • GNSS: L1 C/A, L1OF, B1, B1I, E1/BC, G1
RSU - Hardware Architecture
RSU - Software Architecture