1. If you can count the number of cars "backed up" behind you, you're spending too much time looking in your rear-view mirror instead of watching where you're going.
   
2. The speed limit is supposed to be a maximum, not a minimum.  I know nobody treats it like that in practice, but muddling it in law puts drivers in an untenable situation.  Let's say you have five cars behind you in a 45mph zone.  Driving 45.1 is illegal.  Now driving 44.9 is illegal too.  So in practice, it will come down to police discretion, which was already the case.  I guess they want fewer citations thrown out, so they made even safe and reasonable driving illegal.
   
3. If you have more than five people behind you, that means the person directly behind you has at least five behind him.  Is he required to pull to the side if you don't?
   

...tanker trucks on the side of the road vulnerable to terrorist plots.

Like we've had so many of those here.

that said, i should think you'd be thrilled jeralyn, secure in the knowledge that your state legislature has attended successfully to every other issue before it, and had time left over to deal with this non-solution in search of a problem.

In the meantime, the wingnuts are busy wetting themselves over a "terrorist network between Kabul and Colorado" (SuperMax) and unattended tanker-trailers on the side of the road.

Those who are not comfortable on the highway should take the surface streets, where stopping and starting and slower speeds are the norm.

Unfortunately, it seems to be not so much the people nervous about highway driving that are the problem, but the people talking on the phone, or texting, and who are in some other world where no one else matters.

When I was learning to drive, many, many years ago, "keep to the right, except when passing" was indelibly branded into our heads. Haven't you noticed how today, as soon as a driver, usually elderly, enters a highway, he/she immediately whips into the left (passing) lane.......and stays there. They're not passing, just cruising along, and usually below the prevailing speed most other drivers are doing.

One by one, all the  "rules of the road" have passed into oblivion: turn signals (BEFORE turning,} tailgating, lights on during rain, parking lights during dusk driving, interpreting "yield" signs as "floor it!," ditto for orange traffic lights, and the aforementioned left lane driving.

The last one is especially dangerous, as highway experts have told us that "changes" during driving are what's dangerous, not necessarily higher, but steady, speed. With the left lane drivers, hundreds of cars are compelled to pass on the right, which as everyone knows, is very dangerous.

And what if it's snowing or icy out? I always drive at a snail's pace when it's snowing or icy.

If there is bad weather or no place to pull off safely, they would not be subject to the $56 ticket or points off their license.

Turning Out of Slow-Moving Vehicles
21656.  On a two-lane highway where passing is unsafe because of traffic in the opposite direction or other conditions, a slow-moving vehicle, including a passenger vehicle, behind which five or more vehicles are formed in line, shall turn off the roadway at the nearest place designated as a turnout by signs erected by the authority having jurisdiction over the highway, or wherever sufficient area for a safe turnout exists, in order to permit the vehicles following it to proceed. As used in this section a slow-moving vehicle is one which is proceeding at a rate of speed less than the normal flow of traffic at the particular time and place.
Amended Ch. 448, Stats. 1965. Effective September 17, 1965.

I live at the summit of a mountain road and have never , ever seen or heard about this section being enforced.