I was surprised by the carelessness of London’s bikers. Thankfully, cars drivers have no other option but to stay away from them. They ride at anytime of the day, during night or day. Their bike’s roads are no more than a thin red line painted along the sidewalks. Some use lights to be spotted, some helmets. Many don’t. To take turns they just signal with their arms and hands, left or right, and make their move. They don’t even look to see if they can pass.
As the opposite in Mexico City, there are not that many roads where bikers can circulate, roads are confined, and the use of helmet is a must (a similarity here as some just don’t use it), cars barely respect cyclists.
And an added difficulty, you would have to ride on the left side of the road.
Left or right driving? from: http://www.worldstandards.eu/cars/list-of-left-driving-countries/
This world map shows which side of the road traffic drives on. Green coloured countries drive on the right, orangecountries drive on the left. As you can see, most former British colonies, with some exceptions, drive on the left side of the road, whereas the United States of America, Latin American countries and European countries drive on the right. Almost always, in countries where one drives on the right-hand side of the road, the cars are built so that the driver sits on the left-hand side of the car. Conversely, driving on the left-hand side of the road usually implies that the driver’s seat is on the right-hand side of the car.