Open cars were popular in warm weather. When it rained, there were side curtains that one could unroll from the roof to keep one dry. However, the motorman would stand exposed to wind and rain on the front platform. To handle both warm and colder months, the TSR used the "convertible car" in which the nearside of the car could be removed in the spring, and re-connected in the fall, thus changing from an open car to a closed car. A dangerous feature of open cars was the running board where passengers could stand while the car was in motion. Because of safety concerns, the Railway and Municipal Board banned open cars from the streets on November 22, 1915.