A lorry driver failed to leave enough room when overtaking two cyclists, causing one to veer sharply to avoid a collision.
Lindsay Lock, 60, of Low Road, Ayr was fined £370 and received three penalty points on his license for acting in an aggressive manner and driving a lorry without due care and attention on the B746 at Troon on April 23 last year.
Ayr Sheriff Court heard two cyclists were riding single file on the B746, near to Deveron Road, when they heard Lock, of Ayr, shouting behind them.