---
title: "Challenge: Speed Program"
content_type: tutorial
url: "https://learn.unity.com/tutorial/challenge-speed-program?language=en"
language: en
difficulty: beginner
duration_minutes: 15
unity_version:
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supported_unity_versions:
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    url: "https://learn.unity.com/tutorial/challenge-speed-program.md?language=en&version=2019.3"
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last_updated: "2026-08-04T14:22:36.000Z"
---

# Challenge: Speed Program

Use conditional statements to build a program that gives speed advice and prevents the value from dropping below zero.

In this challenge, you will use conditional statements to create a program which will:

- Advise the user when they should increase or decrease speed
- Make sure that the speed cannot go under 0

## 1. Challenge: Speed Program

[Video](https://connect-mediagw.unity.com/h1/20190527/videos/7c600073-9dad-4b33-9e80-e3212a7df6d4_12_Challenge_Speed_Program.mp4) ([Transcript (en)](https://connect-mediagw.unity.com/h1/20200210/c45cff24-9cc5-490a-af0c-e19de474e190_37_Challenge_Speed_Program.vtt))

## 2. Challenge Review: Speed Program

[Video](https://connect-mediagw.unity.com/h1/20190527/videos/f4b06f58-76b4-4b7e-a93a-833465a6b207_13_Challenge_Review_Speed_Program.mp4) ([Transcript (en)](https://connect-mediagw.unity.com/h1/20200210/526b370d-0bd8-4de9-abdf-e15fcae5be8f_38_Challenge_Review_Speed_Program.vtt))