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Legal Speed - Refresher Update 2025
Quiz by Mark Lester Diacos
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
​When a spline starts out of nowhere and the nearest sign prior to the map edge DP can be used to determine speed, how should the case be treated? especially if the sign is not detected by the Map Marker?
Use confidence 5 and treat it as a map edge, unless there is an observed sign after the DP begins—then treat it as a regular DP.
Always treat it as a regular DP as long as a DP exists, even without signs.
Treat it as a regular DP and use confidence 3 regardless of sign presence.
​When a speed limit sign is placed on the same pole as a warning sign (e.g., for a roundabout), how should the speed be treated after the warning condition ends?
The speed limit applies while the warning sign is in effect and stops when the next crossroad is reached, regardless of any sign or condition.
The speed limit applies while the warning sign is in effect and ends once a crossroad is reached or the road transitions to a different type, regardless of any additional signs or conditions.
The speed limit applies while the warning sign is in effect and ends once a crossroad is reached or when a new speed limit sign appears, regardless of other conditions.
The speed limit applies while the warning sign is in effect and stops once the warning condition ends. After that, we resume the same speed that was in place before the 30 sign.
When a spline starts out of nowhere and the nearest sign prior to the map edge DP can be used to determine speed, how should the case be treated? especially if the sign is not detected by the Map Marker?
When a speed limit sign is placed on the same pole as a warning sign (e.g., for a roundabout), how should the speed be treated after the warning condition ends?
when we encounter a case where MM detects a Legal Speed (LS) of 35, but Google Maps (GM) shows an undetected LS 25 School Zone sign. There is also a detected "End of School Zone" sign at the end of the road, and the other side of the road has a detected LS 25 School Zone. What speed should be applied in this case?
We are reviewing an area that appears to have both business presence and narrow roads. One part resembles a Business District, and the other looks like an Alley. Based on US guidelines for road type tagging, how should you classify these areas?
We encounter a road in Milan (Italy) where an “End of Zone 30” sign is present, but there are no visible “Zone 30” signs at any of the entrances or access points. What should be the correct speed limit applied?
A “Zone30 creates a slow road type, in which the speed propagates until EndOfZone. However, the rules page does not list LS 30 as a road type speed the lowest indicated is LS 50. What should you do?
In a case where the road type was prioritized over speed propagation. There's a rule about excluding certain lanes when determining lane count. Which of the following is true?
In the Netherlands, if you encounter an LS 60 explicit sign along with other signs related to school zones, how should it be tagged according to the LS Rules?
Is this a case of Bad DP?
Is this a case of Bad DP?
