# ODOT Roadside Safety Guide vs DOT Chart 17

The clearest difference is update cadence: DOT Chart 17 at every 10 months against ODOT Roadside Safety Guide's every 65 months. DOT Chart 17 also leads on iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ODOT Roadside Safety Guide ships an update every 65 months, DOT Chart 17 every 10 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ODOT Roadside Safety Guide | DOT Chart 17 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/dot-chart-17/id1245251292/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 65 months | **Every 10 months** |
| Monetization | — | Free |
| Size | 53 MB | 20 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Ohio Department of Transportation](https://appshunter.io/developer/1034284574) | [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) |

## What reviewers say

### ODOT Roadside Safety Guide

[App page](https://appshunter.io/ios/app/odot-roadside-safety-guide/id987542248)

**Features:** macOS Compatibility

**In-app purchases:** none


### DOT Chart 17

[App page](https://appshunter.io/ios/app/dot-chart-17/id1245251292)

Access a full-color display of hazardous materials markings, labels, and placards. This app provides quick visual information and regulatory citations for shippers and carriers. It serves as a general guidance tool for hazardous materials regulations.

**Highlights:** Full-color display of markings, labels, and placards, Access to Hazardous Materials Regulations (HMR) citations, Quick visual information for shippers and carriers, Mobile access to DOT Chart-17, Guidance on 49 CFR Parts 171-180

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ODOT Roadside Safety Guide free?

ODOT Roadside Safety Guide is free to download, with no in-app purchases.

### Is DOT Chart 17 free?

DOT Chart 17 is free to download, with no in-app purchases.

### Do ODOT Roadside Safety Guide or DOT Chart 17 have ads?

Neither ODOT Roadside Safety Guide nor DOT Chart 17 shows ads.

### Which is updated more often, ODOT Roadside Safety Guide or DOT Chart 17?

ODOT Roadside Safety Guide ships an update every 65 months, and DOT Chart 17 every 10 months. Most recently, ODOT Roadside Safety Guide was updated on October 21, 2026 and DOT Chart 17 on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*