GazetteNews Residents reach their limit 21/10/2015 FacebookTwitterEmail Rowallan Avenue in Harkaway will soon be reduced from 100km/h to a 60km/h speed zone. By GEORGIA WESTGARTH RESIDENTS consider it dusty and dangerous, and now the 100km/h speed limit on Rowallan Avenue Harkaway has […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password