Question

why do you signal a right turn before the last exit(there are 4 exits to the right)​

Answer 1

Explanation:

The "turn signal" or "blinker" lights aren't solely for use when making a 90-degree turn or changing lanes. They are intended to provide a visual cue of the driver's intent while on the roadway. If you intend on continuing straight through at an intersection or ramp, no signal is needed. But changing your direction of travel, even on a lane with multiple possible destinations, requires a signal.