The A72 at Horsburgh will be subject to a 30 miles per hour speed limit. READ MORE:Tweeddale chiropractor to appeal refusal of certificate to operate from homeThe restriction will be in place from 6am on August 15 until 2am on August 16. The temporary limit covers the length of the A72 at Horsburgh from 650 metres east of the junction with the B7088 to 440 west at the same junction.