Message Monday - Pass on left, drive on right, text in parking lot

10-9 message mondayIf you spend much time on multi-lane highways, you’ll probably run into those drivers who think the left lane was put in specifically for them. That might be true, as long as the vehicles using the left lane are passing slower vehicles in the right lane.

On a highway of four lanes or more, the right lane in each direction is considered the driving lane and the left lane, the passing lane.  Although the Iowa DOT has 695 “SLOWER TRAFFIC KEEP RIGHT” signs posted on the Primary Highway System, not all drivers notice them or understand the meaning behind the signs. Others see the signs and think it gives them the right to tailgate or otherwise endanger the safety of slower traffic that might be in the left lane.

So what’s the big deal, other than it’s annoying? The danger comes whenever traffic is moving at uneven speeds, especially if someone is going less than the flow of traffic in the left lane. Did you know driving too slow in the passing lane is actually illegal?  Here’s the code section, 321.297.

So next time you’re on a multi-lane highway, get in the “right” lane.

Here’s a great video on why left lane driving can be a safety problem -

The fatality count of 259 is an increase of 13 since last Monday. In all of 2016, 404 people were killed on Iowa highways. To see statistics published daily by the Office of Driver Services, go to the daily fatality report at

Four paved lanes, four lanes to drive in !

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.


Have a comment?


©  Iowa Department of Transportation.  All rights reserved.