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14th Annual OSAR Conference 2025: Onboard Sensing, Analysis, and Reporting 

April 17 & 18, 2025

The Role of Onboard Sensing and Emissions Reduction in Moving Towards a Sustainable Transportation Future
Location: Bourns Technology Center, 1190 Columbia Ave, Riverside, CA 92507

https://goo.gl/maps/u4Tc6s96ykafoba37

Registration is now closed

The 14th Annual International OSAR Conference is scheduled for April 17th & 18th, 2025, in Riverside, California.

This workshop’s theme, The Role of Onboard Sensing and Emissions Reduction in Moving Towards a Sustainable Transportation Future, will focus on a wide range of measurement systems and activity measurements, as well as measurements of less traditional sources and how they can be used to facilitate a better transition to a sustainable transportation sector. In an era where climate change and sustainability are becoming the issues that will define our generation, it is important that the viability of different transportation solutions can be evaluated and validated. This is particularly true when these solutions will be utilized to achieve local air quality goals, but also when topics such as economic viability and scale are considered. Our theme message revolves around the need to understand the effectiveness of a wide range of sustainable transportation strategies that might be implemented in a wide range of applications and the key role that onboard sensing technology can play in driving positive changes. We are committed to championing sustainable transportation solutions, with a focus on onboard sensing, as a powerful tool for emissions and energy use quantification and informing data-driven policies. Onboard sensing technology, as well as traditional portable measurement and modeling tools, can help create a more sustainable and prosperous world for all today and for generations to come.

For any questions please reach out to certpems@cert.ucr.edu

Import Dates (All times are in PST)
Call for Abstracts Now CLOSED
Abstracts Submission Deadline Now CLOSED
Early Bird Registration

Now CLOSED

Full-Price Registration $150 students | $450 everyone else
March 27, 2025 until April 17, 2025

Call for Abstracts is now closed.

Day 1 – Thursday, April 17, 2025

Time Session Details
7:00 am – 8:00 am Check-in and Breakfast  
8:00 am – 9:00 am Opening Remarks & Keynote Speakers Kent Johnson (UC Riverside, CE-CERT) – Welcome & Opening Remarks; Tom Durbin (UC Riverside, CE-CERT) – Keynote Speaker
9:00 am – 10:00 am Government Policy Ricardo Suarez-Bertoa (JRC) – PTI to Revise EU Roadworthiness Directive; Carl Fulper (US EPA) – Heavy-Duty Diesel Vehicle Tampering; Chris Sharp (Southwest Research Institute) – CARB NOx Sensor Modeling
10:00 am – 10:30 am Break  
10:30 am – 11:30 am In-Use Real-World Emissions Carl Desouza (Imperial College London) – Multi-Gas Engines in UK Construction Sector; Karl Ropkins (University of Leeds) – Diesel Hybrid/Advanced Biofuel/PEMS Study; Georges Saibla (CARB) – Energy Use in Battery Electric, Fuel Cell & Conventional Buses
11:30 am – 12:45 pm Lunch – Sponsored by SCAQMD  
12:45 pm – 1:45 pm In-Use Real-World Emissions (cont.) Yang Li (Cummins Inc.) – On-Board Emission Measurement with NOx Sensors; Grace Johnson (UC Riverside, CE-CERT) – CE-CERT’s OSAR Data Analysis; Imad Khalek (Southwest Research Institute) – DPF Filtration Efficiency for Diesel & Biodiesel Blends
1:45 pm – 2:15 pm Break  
2:15 pm – 3:15 pm Data Analytics and Tools Joshua Israel (HORIBA) – IRLAM PEMS with NH3 & N2O; Joshua Orlando (AVL) – AVL Analytics Software; Yucheng He (CARB) – Big Data for Emissions Inventories
3:15 pm – 3:45 pm Break  
3:45 pm – 5:00 pm Panel Discussion Kent Johnson (UC Riverside, CE-CERT); Ricardo Suarez-Bertoa (JRC); Imad Khalek (Southwest Research Institute); Tom Durbin (UC Riverside, CE-CERT); Elizabeth Melgoza (CARB)
5:00 pm – 5:15 pm Closing Remarks  
5:15 pm End of Day 1  
5:30 pm – 8:30 pm Evening Reception Networking Reception – CE-CERT Lobby

Day 2 – Friday, April 18, 2025

Time Session Details
7:30 am – 8:30 am Breakfast  
8:30 am – 9:50 am New Research Carl Ensfield (Sensors Inc.) – Ultra-Low NOx PEMS System; Axel Freund (CARB) – Mobile Hydraulic Engine Dynamometer; Ehsan Soleimanian (CARB) – MoHyD Testing on Off-Road Equipment; Daisy Thomas (3DATX) – FLEX-PNC Particle Number System
9:50 am – 10:20 am Break  
10:20 am – 11:40 am PM Brake and Tire Zisimos Toumasatos (UC Riverside, CE-CERT) – Brake & Tire Program Review; Okjoo Park (CARB) – Brake-Wear PM Emissions; Lia Dam (CARB) – Heavy-Duty Activity & Brake-Wear PM; Elizabeth DeFrance (UC Riverside, CE-CERT) – Brake/Tire Emissions from Light-Duty Vehicles
11:40 am – 11:55 am Break & Boxed Lunch Pickup – Sponsored by Sensors  
11:55 am – 12:55 pm 2025 Featured Speaker Kent Johnson (UC Riverside, CE-CERT) – Exposure Studies Using Low & High Cost Data
12:55 pm – 1:00 pm Closing Remarks  
1:00 pm End of Day 2  

OSAR 2025 Sponsorship

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