In reply to <a href="https://htxt.co.za/2013/12/queues-at-sanral-outlets-as-some-joburg-shops-sell-out-of-etoll-tags/#comment-743">a</a>. You are indeed correct. The law is only to pay for the usage of the roads; obtaining a tag is optional, and allows for lower toll fees to be charged. Apologies for the ambiguous wording.