Term
| Traffic Control Devices (TCD) |
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Definition
| markings, signs (shape color & message), signals |
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Term
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Definition
| Manual on Uniform Traffic Control Devices |
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| The phase (Φ) of trans. engineering that deals primarily w/ traffic operations and TCD's for highways. |
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When NHTSA changes "accidents" to "crashes"/"collisions" |
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Definition
1997- "accident implies somebodies fault" |
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Term
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Definition
Expert Witness council (Doc Bob was chair of this) |
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Term
3 elements of collision (%'s of failure/fault) |
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Definition
1. Driver 70-90% 2. Environment (Design of Roadway, Weather, etc) 20-30% 3. Vehicle 5-10% |
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Term
| example of accident reconstruction always changing because of technology |
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Definition
| ABS leaves smaller skid marks |
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Term
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Definition
| Event Data Recorder- Black Box of the car |
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Term
| expert witness looks at what issues? |
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Definition
| signing issue, speed issue, stopping distance |
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Term
What to look at in crash (evidence)? |
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Definition
Crash Report, photographs, skidmarks |
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Definition
Critical Investigation Report Team When there is a crash where there is a fatality, they come. |
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Term
| What to know about skidmarks |
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Definition
They aren't rubber- Tire heats up the roadway and spreads the heated bituminum from concrete They are darker in the front tires (and on one side if turning) because of weight distribution |
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Traffic Impact Study or Traffic Impact Analysis |
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Term
| Purpose of Traffic Impact study |
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Definition
Evaluates Level of service (LOS)- if C or above its OK Develop if a new traffic light or turn lanes needs to be put in Used to allocate to pays for what |
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Intelligent transportation systems, Intelligent Vehicle Highway System |
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Definition
GPS, ONstar, ABS, Airbags, Anti-collision sensors, vehicle stabilizers (anti-roll) |
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Traffic Signal Optimization & TMC |
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Definition
volume-density controlled by Traffic Management Center (TMC) |
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Term
| Bus Transit and other Modes GPS |
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Definition
tracking buses by the numbers on top of the bus to make sure they're on schedule and not too close to eachother. Barcode scanning on the side of trains to track as well - problem was that dirt on the barcode ruined it |
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Definition
| measuring mpg efficiency, speed (governors), hours driven. weighing in motion (5 mph or less) |
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Definition
-decreasing demand to increase supply -toll roads -parking ($) -ARZ (auto restricted zone) |
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Term
| Traffic Calming 4 Purposes? |
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Definition
1. reduce volumes 2. reduce speed 3. reduce truck traffic 4. reduce collisions |
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Term
| stop signs can't be used for..? |
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Definition
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Term
| difference between traffic circle and roundabout |
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Definition
traffic circle is smaller and not meant to replace an intersection (speed control) roundabout much larger- replaces an intersection |
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Definition
8 hr warrant 4 hr warrant peak hr warrant pedestrian volume school crossings coordinated system crash experience roadway network |
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Term
| a centerline is painted on a Michigan road. |
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Term
| the first electric traffic signal is installed in Cleveland. |
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Definition
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| the first STOP sign appears in Detroit |
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Definition
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Term
| the Federal-Aid Act (1916) |
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Definition
| requires that a State have a highway department before it can get Federal money. |
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Term
| Wisconsin is the first state to ? |
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Definition
| (1918) to erect official route signs as part of its maintenance functions |
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Term
| the first 3-color traffic signal is installed where and when? |
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Definition
American Association of State Highway Officials (1924)- created the first signing manual in 1927 |
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| MUTCD completely rewritten |
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Term
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public sector: state and local trans. planners &engineers private sector: construction and engineering contractors. |
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