Traffic Laws & Road Safety Rules Flashcards

Which federal act established uniform traffic control device standards across all US highways?

Answer: Manual on Uniform Traffic Control Devices (MUTCD) authority under FHWA

The FHWA's MUTCD establishes the national standards for all traffic control devices on US public roads.

A student driver is approaching a solid double yellow center line. What does this marking prohibit?

Answer: Passing in either direction

A solid double yellow center line prohibits passing in either direction, indicating a no-passing zone for traffic on both sides.

When a driver approaches a railroad crossing with no signals or gates, what action is required?

Answer: Stop completely, look both ways, then proceed when safe

At uncontrolled railroad crossings, drivers must stop, look in both directions, listen for trains, and cross only when safe.

According to NHTSA guidelines, at what speed range does aerodynamic drag become the dominant factor affecting fuel efficiency?

Answer: Above 50 mph

Aerodynamic drag increases significantly above 50 mph and becomes the dominant resistance force, greatly affecting fuel consumption.

A driver trainer is explaining minimum following distance. What is the general rule for following distance at highway speeds?

Answer: 3–4 seconds behind the vehicle ahead

The 3–4 second following distance rule is recommended at highway speeds to allow adequate reaction and braking time.

What does a white edge line (fog line) on the right side of a road indicate?

Answer: The right edge of the travel lane

A white edge line marks the right boundary of the travel lane, helping drivers maintain lane position in low-visibility conditions.

Which regulatory sign indicates that a driver MUST take a specific action?

Answer: White rectangle with black text

Regulatory signs use a white rectangular background with black (or red) text to convey legally required actions or restrictions.