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Transpo Intro
| Question | Answer |
|---|---|
| What do we mean when we say transportation is a “derived demand”? | A desire to get to a destination to do an activity |
| What do we mean by “utility” of a transportation alternative? | A measure of satisfaction or usefulness of this alternative |
| What are some major technical transportation engineering challenges? | Infrastucture Crisis, Congestion Relief, Funding |
| What act created the largest peacetime public works program in the history of the world, and what was the program called? | Federal Aid Highway Act of 1956 |
| What do electric vehicles have to do with highway financing? | They do not have to pay gas tax |
| When was the US Department of Transportation created? | 1967 |
| Who is the California Secretary of Transportation? | Dr. Toks Omishakin |
| What is the minimum population of urbanized areas that mandates the presence of a Metropolitan Planning Organization? | At least 50.000 |
| What is the AASHTO highway design standard for drivers’ eyes above the roadway? | 3.5 seconds |
| How long is the AASHTO combined perception-reaction time (PRT) for braking (for design purposes)? | 2.5 seconds |
| If someone with 20/20 vision can just see a sign at 20 ft, at how many feet can someone 20/40 vision just see it? | 10 ft |
| Where in a traffic tunnel would the lighting be more closely spaced and why? | At the start longer to adjust to darkness |
| Which driver characteristic is “Good Driver Syndrome” an example of? | Behavioral |
| Why can designing traffic facilities for pedestrians be difficult? | Unpredicatable |
| What pedestrian walking speed is commonly used for traffic design purposes? | 4 ft/s |
| What two main factors govern the design of roadways? | Vehicles and human capabilities |
| These are the two opposing forces that determine straight-line performance of road vehicles? | Tractive effort and Resistance |
| What is used to determine the maximum engine power which a vehicle can utilize to overcome resistances? | Maximum tractive effort achievable at road/tire interface |
| What are three major sources of vehicle resistance? | Aerodynamic, rolling,grading/Gravity |
| What are some sources of aerodynamic resistance? | Air flowing through car, over, and around |
| One horsepower is equal to how many ft-lb/sec? | 550 |
| What accounts for 90% of vehicle rolling resistance? | Tire deformation |
| What two components make up stopping distance? | Perception/Breaking distance |
| For design purposes, the coefficient of friction used in calculating stopping sight distance assumes that the vehicle is: | Skidding on wet pavement |
| How many times greater is the design braking coefficient of friction for dry pavement compared to wet pavement? | 2x |
| What is the perception-reaction time used in designing a yellow change interval at a signalized intersection? | 1.0 second |
| The H-3 freeway, which is entirely within the island of Oahu in Hawaii, qualified for Federal funding under the Federal Aid Highway Act of 1956 due to its importance for: | National defense |
| The Federal Aid Highway Act of 1956 created the: | Interstate system |
| The construction cost of most of the US Interstate highway system was shared between Federal and State funding, respectively, as follows: | 90%/10% |
| The Highway Trust Fund is administered by the: | California Transportation Commission |
| The fundamental legal authority for most public highways rests with: | the Federal Government |
| The US Federal gasoline tax is: | 18.4 cents/gallon |
| If someone with 20/40 vision can just see an object at a distance of 20 ft, a person with 20/20 vision can just see the object at: | 10 ft |
| The AASHTO braking perception-reaction time for highway design purposes is: | 2.5 sec |
| A common pedestrian design walking speed for traffic design purposes is: | 4 mph |
| The AASHTO highway design height above the roadway for a driver's eye is: | 3.5 ft |
| Important socioeconomic factors known to affect travel behavior include: | Household size Income Auto availability |
| T/F Congestion relief is a major technical challenge facing transportation engineers, which is focused entirely on how to build more and bigger highways: | False |
| T/F Gasoline taxes provide a sound and sustainable basis for financing future transportation projects: | False |
| The “Good Driver Syndrome” discussed in class is an example of which driver characteristic: | Behavioral |
| Caltrans has ___ district offices spread across California | 12 |
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