If speeding increases by 15-20% as a result of the Bill (see paragraph 24 above), it is reasonable to assume that prosecutions for speeding will increase by the same proportion, and that this will lead to some additional 13 The proportion of all traffic exceeding the speed limit is 11 + 10 + 5 = 26%. Of this, the speeding traffic on urban minor roads (11%) is 11/26 = 42%. 14 This assumes that drivers’ greater propensity to speed in built-up areas when the limit is 20 mph (rather than 30) doesn’t affect their propensity to speed elsewhere. 7 This document relates to the Restricted Roads (20 mph Speed Limit) (Scotland) Bill (SP Bill 39) as introduced in the Scottish Parliament on 21 September 2018 costs for the Crown Office and Procurator Fiscal Service (COPFS) and Scottish Courts and Tribunal Service (SCTS). 28.