user65211: Introduction
I've been meaning to build a vehicle using arduino components and LEGO. I have a mechanical clamp built with arduino which will be locked on top of a custom LEGO build (It should be made out of LEGO blocks and arduino sensors). In my mind, it resembles a crawler.
Question
I've been looking for a way of controlling it remotely.
I only have experience with IR controllers but I'm not sure if this technology would fit for my project.
What I'm looking for is a technology wich could transmit data to an Arduino board (thus, an emitter and a receiver component) which, in my case, could comfortably handle a veichle. 
Plus, it should have a range of action of at least 5 meters (15 ft).
If such technology exists, do you know any controller which could do the job for me?

user31105: You can use radio transmitter/receivers, they are typically called RF (Radio Frequency) modules.
Typical examples are nRF24L01+ (2.4 GHz), or RF 315/433 modules (on 315/433 MHz).
There are more possibilities, but these are the most used on Arduino and libraries are available.

65211: <h1>Introduction</h1>

<p>I've been meaning to build a vehicle using arduino components and LEGO. I have a mechanical clamp built with arduino which will be locked on top of a custom LEGO build (It should be made out of LEGO blocks and arduino sensors). In my mind, it resembles a crawler.</p>

<h1>Question</h1>

<p>I've been looking for a way of controlling it remotely.
I only have experience with IR controllers but I'm not sure if this technology would fit for my project.</p>

<p>What I'm looking for is a technology wich could transmit data to an Arduino board (thus, an emitter and a receiver component) which, in my case, could comfortably handle a veichle. </p>

<p>Plus, it should have a range of action of at least 5 meters (15 ft).</p>

<p>If such technology exists, do you know any controller which could do the job for me?</p>
 31105: <p>You can use radio transmitter/receivers, they are typically called RF (Radio Frequency) modules.</p>

<p>Typical examples are nRF24L01+ (2.4 GHz), or RF 315/433 modules (on 315/433 MHz).</p>

<p>There are more possibilities, but these are the most used on Arduino and libraries are available.</p>
