They tried to do that in NYC but had to postpone it. Otherwise it was suppose to start this summer. Not everything that works elsewhere will work or be tolerated everywhere.In London they charge the equivalent of RD$ 1,000 per day to drive in the center. All of that money has to be spend on public transport. When they introduced it, at a stroke they eliminated half the traffic. The only solution for Santo Domingo is to make driving way more expensive, and invest in far better public transport. To an extent they are doing that in the Colonial Zone, it's so difficult to park now that most people I know go by Uber. But it needs to go way further.
It's also about a cultural shift. I don't have a car in DR, I just use Uber and taxis, way cheaper and way less hassle. But none of my friends can believe I don't have a car, they think it's like a status symbol.
In the DR creating new tolls in roads that are already in use is definitely not tolerated. The most recent was the new toll that was suppose to operate in the Duarte Highway (La Penda.) In the end, the government had no choice but to dismantel the new toll that was never used as a toll. Tolls on new roads are tolerated because they are new, thus the population hasn’t used them as free roads. So now they build new tolls on new roads. The new toll on the Duarte Highway in Pedro Brand isn’t creating an outcry because it replaces the old toll by KM 25. If it wasn’t for that…
Imposing any type of congestion toll in SD or STI (or elsewhere, even Moca gets traffic jams during rush hour and that’s a small city) will be an up hill battle.