The Highway Traffic Act requires drivers to signal only when other drivers are directly affected, but signalling is a good idea at any change of direction. Drivers must always remember that signals are for informing other drivers of an intention to move; signalling does not equal the right-of-way. Drivers must wait for a safe moment to complete the movement without causing inconvenience to other road users. The applicant should be able to signal all changes of direction with the proper instructions.