The minimum distance before making a turn at which you should signal is generally at least 100 feet. This is the common standard across most states for turns in city or residential areas
. For higher-speed roads such as highways, the recommended signaling distance increases to 200 to 300 feet in advance to give other drivers ample warning
. For example, commercial vehicles often must signal up to 300 feet before turning
. Signaling at least 100 feet before a turn gives other drivers about 2 seconds to react at speeds around 35 mph, which is considered the bare minimum. Signaling earlier is encouraged when possible, especially in heavy traffic or poor visibility conditions, to enhance safety
Summary:
- Minimum signaling distance before a turn: 100 feet (typical for city/residential roads)
- On highways or faster roads: 200 to 300 feet
- Larger vehicles may require longer signaling distances (up to 300 feet)
- Signaling earlier than the minimum is safer and recommended when conditions require
These distances align with legal requirements and best safety practices across various states
