# oCFR > Online access to U.S. hazardous materials and pipeline safety regulations. (iPhone/iPad app by Pipeline and Hazardous Materials Safety Administration.) - Source: https://appshunter.io/ios/app/ocfr/id1228220888 (this page in markdown: same URL + `.md`) - Developer: [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) - Category: Reference, Books - Price: Free - Rating: 3.70/5 from 9 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 70 MB - Languages: American English - Released: 2017-07-06 - Data updated: 2026-06-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ocfr/id1228220888/reviews.md ## What is oCFR? The U.S. DOT. Pipeline and Hazardous Materials Safety Administration’s (PHMSA) mission is to protect people and the environment by advancing the safe transportation of energy and other hazardous materials that are essential to our daily lives. This app provides online access to PHMSA’s Hazardous Materials Regulations (HMR) in 49 CFR parts 100-180 for the classifying, handling and packaging of hazardous materials by highway, rail, aircraft, and vessel. This app also provides online access to PHMSA’s Pipeline Safety Regulations in 49 CFR parts 190-199, which provide the Federal minimum safety standards for the design, construction, operation and maintenance, and spill response planning for pipeline and LNG facilities involved in the transportation of natural gas and hazardous liquids within the United States. ## Key features - Hazardous Materials Regulations (HMR) - Pipeline Safety Regulations - 49 CFR Parts 100-180 - 49 CFR Parts 190-199 - Covers highway, rail, aircraft, and vessel transport - Includes design, construction, operation, and maintenance standards ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/ocfr/id1228220888/reviews.md ### 1/5 — App is just a white page when I try to open *2025-10-14* App is just a blank white page when I try to open it. ### 5/5 — This is the best 49 CFR app in existence *2021-12-04* I promise you if you have used the free electronic 49 CFR on your computer, you will end up falling in love with this. ## Frequently asked questions about oCFR ### What is oCFR? oCFR provides online access to the U.S. Department of Transportation's Pipeline and Hazardous Materials Safety Administration's (PHMSA) Hazardous Materials Regulations (HMR) and Pipeline Safety Regulations. It covers federal standards for the safe transportation of hazardous materials and pipeline operations. ### What specific regulations are included in oCFR? oCFR includes access to 49 CFR parts 100-180 for hazardous materials regulations and 49 CFR parts 190-199 for pipeline safety regulations. These cover classification, handling, packaging, design, construction, operation, maintenance, and spill response planning. ### What modes of transport does oCFR cover for hazardous materials? oCFR covers the transportation of hazardous materials by highway, rail, aircraft, and vessel. This ensures comprehensive access to regulations relevant to various shipping methods. ### Is oCFR available on multiple devices? Yes, oCFR is available for iPhone, iPad, and iPod. This allows users to access critical safety information across different Apple devices. ### How often is oCFR updated? The latest version of oCFR is 3.8, and it was last updated on November 25, 2025. This indicates that the app is actively maintained to reflect current regulations. ### What is the user rating for oCFR? oCFR has a rating of 3.7 stars from 9 ratings. This provides an indication of user satisfaction with the application. ### Does oCFR have ads? No, oCFR does not contain advertisements. As a free application from the U.S. DOT, it focuses on providing regulatory information without commercial interruptions. ### What is the age rating for oCFR? oCFR has an age rating of 4+. This means the content is generally suitable for all ages, making it accessible for a wide range of users. ## Version history (last 5 releases) ### 3.8 — 2025-11-25 2024 oCFR data ### 3.7 — 2024-10-01 Minor performance improvements ### 3.5 — 2024-08-31 Updated with October 1, 2023 data. ### 3.4 — 2024-02-07 Added 2022 CFR data ### 3.3.0 — 2023-06-20 CFR 2021 data ## Apps similar to oCFR | App | Rating | Price | Category | | --- | --- | --- | --- | | [ASSP Professional Safety](https://appshunter.io/ios/app/assp-professional-safety/id493584299) | 4.8 (20) | Free | Reference | | [CFR AI - Title 49](https://appshunter.io/ios/app/cfr-ai-title-49/id6502741519) | 5.0 (1) | Free | Reference | | [AskRail](https://appshunter.io/ios/app/askrail/id1142325064) | 4.0 (36) | Free | Reference | | [HazMat Reference](https://appshunter.io/ios/app/hazmat-reference/id385775821) | 4.8 (1,590) | $4.99 | Reference | | [Cathodic Protection Calculator](https://appshunter.io/ios/app/cathodic-protection-calculator/id6498471281) | 5.0 (5) | Free | Reference | | [CAMEO Chemicals](https://appshunter.io/ios/app/cameo-chemicals/id1151912682) | 4.2 (25) | Free | Reference | ## More apps by Pipeline and Hazardous Materials Safety Administration - [RIN Locator](https://appshunter.io/ios/app/rin-locator/id954888821) - [Pipeline Info Mgmt Mapping](https://appshunter.io/ios/app/pipeline-info-mgmt-mapping/id1191673181) - [NPMS Public Viewer](https://appshunter.io/ios/app/npms-public-viewer/id1232277603) - [DOT Chart 17](https://appshunter.io/ios/app/dot-chart-17/id1245251292) - [Hazmat Registration Search](https://appshunter.io/ios/app/hazmat-registration-search/id1459678141) All apps by Pipeline and Hazardous Materials Safety Administration: https://appshunter.io/developer/954888820 ## Related topics [ocfr](https://appshunter.io/ios/topics/ocfr) · [49 cfr](https://appshunter.io/ios/topics/49-cfr) · [ecfr](https://appshunter.io/ios/topics/ecfr) · [hazardous materials for first responders](https://appshunter.io/ios/topics/hazardous-materials-for-first-responders) · [phmsa](https://appshunter.io/ios/topics/phmsa) · [cfr 49](https://appshunter.io/ios/topics/cfr-49) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*