Nowadays, autoguidance systems are commonly used by many arable farmers and contractors. The systems are usually quite expensive and coverage of the necessary RTK network isn’t always guaranteed. There are however alternatives available that can do without GPS. With mechanical, optical or sonic systems, tractors and implements can be guided automatically following tramlines, crop rows, swaths and ridges. Q-rious took a look at the new Grimme RowRunner, the Claas Cam Pilot and the Reichhardt PSR Sonic system. Users only come up with one drawback; you always need an existing line or ridge to follow. The article was published in Boerderij magazine of October 22nd.