Hook & Ladder or Tractor Drawn Aerial vs Straight frame ladder.
The most recognizable fire apparatus in the history of fire fighting, no other rig has the pageantry while traversing city streets. These iconic rigs have been around since the 1800’s.
The pros are of course; capacity, 500 to 650 square feet of storage, vs. 160 square feet of the average straight frame stick. TDA ground ladder capacity is far greater, with ladders stored in the rear and the sides. The next bit of greatness would be maneuverability, despite the length, these trucks can maneuver around the fifth wheel and articulate into tight spaces and only having two (2) outriggers, the set up is much faster than having to setup four. I believe the outrigger stance is little less on the TDAs. This means one operator can set it up.
Two drivers! The tiller driver sits higher and has greater visibility sitting above the tractor cab, however the tiller driver should receive formal training, it’s not the kinda on the job training sort of thing. The tiller driver will have a cabinet, usually under the cab on the right side of the trailer with there gear, helmet, SCBA, coat, axe, maybe a can, (water extinguisher)
You can get a quint version, LAcoFD runs a bunch of TDA quints, with pre-piped water ways.
Crew size, so typically they run with a crew of four or five. Driver, Officer, Tiller operator, one or two fire fighters in the cab.
The cons are of course… cost, these trucks are expensive and the length makes for difficulty finding halls deep enough to house them. TDAs are around 11’ high, so a bit taller than rear mounts.
Quebec City runs two tillers, I believe one is a spare, the other runs in the downtown core. Quebec City has a very European vibe, so the maneuverability is key. I think these are the only TDAs in Canada currently.
The drivers would need to upgrade their drivers license to a class 1, or the FD applies for an exemption. The TDAs weigh roughly 15 000 lbs, however the weight is distributed over a larger area.
I would love to see a few of these guys running the streets of Calgary.