Make sentences comparing travelling by plane, train, boat, car and bike. Example: Travelling by train is safer than travelling by plane. Travelling by bike is less expensive than travelling by car.

Travelling by bike is less expensive than travelling by car. (Путешествовать на велосипеде дешевле, чем на машине)
Travelling by boat is slower than travelling by plane. (Путешествовать на лодке медленнее, чем на самолете)
Travelling by plane is more dangerous than travelling by train. (Путешествовать на самолете опаснее, чем на поезде)
Travelling by car is more comfortable than travelling by bike. (Путешествовать на машине удобнее, чем на велосипеде)
Travelling by ship is more entertaining than traveling by train and by plane. (Путешествовать на корабле веселее, чем на поезде и самолете)
Travelling by car is more interesting than travelling by bike. (Путешествовать на машине интереснее, чем на велосипеде)