> I was driving down I-75 the other day and passed a truck with these words on the driver's door:
> "Custom Pine Straw"
> For those who don't know, pine straw is baled pine needles that are sold for use as mulch on acid-loving plants. But how do you customize pine straw???
>
> A few miles further down the road, I came upon another truck with these words painted on the back:
> "Inland Sea Food"
> Having been a great fan of coastlines most of my life, I feel like I know what seafood is, and where it comes from. But "Inland" has nothing to do with seafood. Freshwater fish and shellfish are not seafood. They are aquadic, which is different from marine. Seafood consists of marine creatures. I expect that the truck hauls seafood from coastal areas to inland markets, but it was worth a doubletake.
>
> On the same trip, I noticed a pickup truck coming up behind me. It was towing a travel trailer. As he passed, I noticed that the travel trailer was towing a boat. Since the boat was not visible from the truck, a flat tire or any minor problem on the boat trailer could posssibly turn into a dangerous situation. It makes me wonder how long such a train can be before it becomes illegal. I recently saw a single pickup towing two boats, one behind the other. They were speedboats in the 18 to 20 foot range and there were two large, crated outboard motors in the bed of the truck. At least he could see both boats in his side mirrors.
>
> I wonder if I could put my canoe on my boat trailer and pull it behind my scooter trailer. There is a small lake at the site of a scooter meet that I will attend this fall.
>
> Regulations for privately owned loads are quite different from regulations that apply to commercial haulers, but it is common to see a trailer truck with two trailers.
> Howard


For what it's worth, here's the limits for commercial vehicles in Colorado:

Legal Length:
45' maximum -- single unit -- measured from extreme
front bumper to extreme rear bumper
70' maximum -- tractor/trailer(s) combination,
not to exceed four total units
No overall length limit for a tractor/trailer combination with a single trailer length of 57'
4" or less
No overall length limit for a combination of units with trailers 28' 6" or less in length ("Western Doubles")
75' maximum (Saddlemounts) not exceed four total units
75' maximum Specialized equipment used in combination for transporting automobiles or boats