---
title: Open Loop in Road
description: “Open Loop” in road is used to open the loop of a closed road design whereby the Start and End point are at the same location, in which users may encounter such situation when modelling a roundabout. For closed loop,…
url: "https://mes100.com/docs/open-loop-in-road/"
updated: "2024-07-11"
category: Modelling Techniques / Road
---

# Open Loop in Road

“Open Loop” in road is used to open the loop of a closed road design whereby the Start and End point are at the same location, in which users may encounter such situation when modelling a roundabout. For closed loop, any amendments or additional of points, the design will be within the loop. Therefore, if users are required to make amendments outside of the loop, users have to click on “Open Loop”

# **Steps on how to use "Open Loop"**

Click on;

**Horizontal > Line > Right click on masterstring > Click Open Loop**

![](https://i0.wp.com/mes100.com/wp-content/uploads/2024/07/1-1.png?resize=1024%2C542&ssl=1)

Image 1 Closed loop

![](https://i0.wp.com/mes100.com/wp-content/uploads/2024/07/2-1.png?resize=1024%2C545&ssl=1)

Image 2 Activate first the Horizontal and Line tab, followed by right clicking on masterstring and click on Open Loop

![](https://i0.wp.com/mes100.com/wp-content/uploads/2024/07/3.png?resize=1024%2C564&ssl=1)

Closed loop is now opened and users may add points outside of the loop

# **Related topics:**

- [How to Simulate Roundabout in Road](https://mes100.com/docs/simulate-roundabout-mes-road/)

### *Related*

 [![](https://i0.wp.com/mes100.com/wp-content/uploads/2024/10/me-small.jpg?resize=100%2C100&ssl=1)](https://mes100.com/author/admin/)[Ngu Soon Hui](https://mes100.com/author/admin/)

I’m the [Benevolent Dictator for Life](https://en.wikipedia.org/wiki/Benevolent_dictator_for_life) for MiTS Software cum Editor of this website. Read more [here](/about-ngu-soon-hui/).

You can also contact me at soonhui@mes100.com