ChairliftCars hang from a steel cable which runs continuously from one end of the chairlift to the other and around large turnaround wheels at each end.
Chairlift
Cars hang from a steel cable which runs continuously from one end of the chairlift to the other and around large turnaround wheels at each end.
Miniature Railroad
Narrow-gauge railroad track, with miniature passenger trains.
Monorail
Track is box-section steel rail supported on square-section steel posts. Trains are powered, and run along the top of the rail with additional wheels on either side for stability.
Suspended Monorail
Track is box-section steel rail suspended by steel support legs. Trains are powered, and hang underneath the rail.
Transport Rides are somewhat of a misnomer. The Guests can mostly not distinguish Transport rides from other rides (such as Roller Coasters), and so will not specifically select them as an alternative to walking (walking makes guests tired, and tired guests don't ride rides (including tansport rides), don't buy food, or drinks, or novelties, and, worst of all, don't stay in your park {s}). This can be anoying, as guests who avoid mild rides will not often choose to use your "transport system". On the other hand, unlike all the other ride types which the guest might reject even if the price was set to Free, if the guest is willing (Intensity preference) to use the ride, they will always ride the transport ride if the price is set to $Free!
Transport Rides should be designed to show the rider some of your park's highlights ("shuttle mode" was intended primarily just for that purpose). Odds are, they'll get excited about seeing these other rides, and will head for them once they get off the Transport ride {s}. And just like with Paths, you can construct your transport ride through parts of other rides, such as a Roller Coaster loop (a thrilling experience for the guests on both rides).
The Miniature Railroad has a steam whistle sound effect that will always be heard when the train is moving.
So they don't change elevation (and therefore slow down while climbing), the Miniature Railroad and the Monorail could be built underground like a subway {s}.
Often early in a scenario you need compact, inexpensive rides but are thwarted by the still limited selection. There is no reason why you cannot use one of the Transport rides and convert it into a compact Gentle ride. Here are examples [from elsewhere in thisReference Guide] of each of the Transport rides that have been so converted. All have a Base Excitement level of Medium (an interesting note is that in the case of these Monorails, the last segment of curved track has a significant influence on Excitement).
Miniature Railroad = 
Little Toot.
Monorail = Mondorail.
Suspended Monorail = Cradle Fall.
Chairlift = Sky Chaise.