<a href="http:&#x2F;&#x2F;www.nolo.com&#x2F;legal-encyclopedia&#x2F;free-books&#x2F;beat-ticket-book&#x2F;chapter7-6.html" rel="nofollow">http:&#x2F;&#x2F;www.nolo.com&#x2F;legal-encyclopedia&#x2F;free-books&#x2F;beat-ticke...</a><p>&gt; There are several circumstances in which drivers may be ticketed for illegally blocking or impeding traffic by driving too slowly or failing to yield to a long line of vehicles behind them.  ...  Driving Too Slowly in Left Lane ... Impeding Traffic ... Failing to Use &quot;Turnouts&quot;<p>Regarding the first of these,<p>&gt; Your state&#x27;s law will say something like:<p>&gt; Any vehicle proceeding upon a highway at a speed less than the normal speed of traffic moving in the same direction at such time shall be driven in the right-hand lane for traffic or as close as practicable to the right-hand edge or curb, except when overtaking and passing another vehicle pro ceeding in the same direction or when preparing for a left turn at an intersection or into a private road or driveway. If a vehicle is being driven at a speed less than the normal speed of traffic mov ing in the same direction at such time, and is not being driven in the right-hand lane for traffic or as close as practicable to the right-hand edge or curb, it shall constitute evidence that the driver is operating the vehicle in violation of this section.<p>Note how this uses &quot;normal speed&quot;, not &quot;speed limit&quot;.<p>The NoLo site at <a href="http:&#x2F;&#x2F;www.nolo.com&#x2F;legal-encyclopedia&#x2F;free-books&#x2F;beat-ticket-book&#x2F;chapter5-1.html" rel="nofollow">http:&#x2F;&#x2F;www.nolo.com&#x2F;legal-encyclopedia&#x2F;free-books&#x2F;beat-ticke...</a> describes how there are three types of speed-limit violations: &quot;Absolute&quot;, &quot;Presumed&quot;, and &quot;Basic&quot;.<p>In an &quot;absolute&quot; speed limit state, you can defend against a &#x27;Driving Too Slowly in Left Lane&#x27; by showing you were were traveling at the posted speed limit. (Quoting NoLo - I have no legal training.)<p>However, that is not true of all states.