land transport riddles   

I am a vehicle that stops at a lot of places. I love taking children to school. I can carry more passengers than a car. Who am I?

I am a type of transport that has two wheels. Ride me everyday and stay fit. I have a pedal on each side. Who am I?

I am a vehicle with four tires. You have to wear a seat-belt when you use me. I am the most seen vehicle on the road. Who am I?

I am a mode of transport. I don’t run on road, I don’t fly, I have special tracks to take you for a ride. I run on engine and have different compartments. Who am I?