Newlay Civil Engineering employee Thomas Shaw was injured in November 2015 when a colleague reversed the vehicle over his leg during road resurfacing work in Straiton, South Ayrshire.
The Health and Safety Executive (HSE) found the road roller had no flashing beacon and the reversing alarm was not working. In December 2015 it served an improvement notice, which the company complied with the next month.
Newlay Civil Engineering has been fined £15,400 after it pleaded guilty to breaching reg 5(1) of the Provision and Use of Work Equipment Regulations over its failure to maintain construction plant and ensure it was in efficient working order and good repair.
After the hearing HSE inspector Graeme McMinn said: "This case highlights the importance of regular proactive maintenance and pre-use inspection of work equipment, including flashing beacons and reversing alarms."