An articulated bus can officially carry 120 passengers[0]. With regards to road space used, 3 SUVs with normal following distance would be approximately the length of the bus, or longer. An articulated bus is about 19m, while an SUV is about 4.5m.[1]
[0] https://en.m.wikipedia.org/wiki/99_B-Line#:~:text=It%20is%20....