When exactly does a new speed limit start during your daily commute?

When Does a Speed Limit Come Into Effect · 7:08 · Video: Today I Found Out · Watch at the source

In short: Many drivers assume they can accelerate as soon as they see a higher speed limit sign ahead. This video clarifies the precise legal moment a speed limit change takes effect, ensuring you avoid unnecessary traffic violations.

A signposted speed limit becomes legally active at the exact physical location where the sign stands. If you are traveling in a 30 MPH zone and approach a 50 MPH zone, you must maintain your current speed until your vehicle has reached the sign indicating the higher limit.

Accelerating before you pass the sign is technically illegal, even if you can clearly see the new limit ahead. This rule applies regardless of your proximity to the transition point.

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