30 mph speed limit inappropriate

When taking into account " 26) Where there is poor compliance with an existing speed limit on a road or stretch of road the reasons for the non-compliance should be examined before a solution is sought. If the speed limit is set too low for no clear reason and the risk of collisions is low, then it may be appropriate to increase the limit.the speed limit " it is evident the speed limit on the silver jubilee bridge is set too low and should be raised to 40 or even 50 mph.