Words and Terms
Transportation is the movement of people and these other things.
What are "goods"?
What is the average headway?
The K factor is the ratio of this to the daily traffic volume.
What is the peak hour volume?
This geographic area tries to keep land uses together, and shouldn't span large roads.
What is a traffic analysis zone (TAZ)?
Intersections use this crash rate
Rate per million entering vehicles (RMEV)
The idea that people use transportation systems for a reason.
What is "derived demand"?
What is "jam density"
This kind of counting categorizes the mix of vehicles on a roadway.
What is classification?
This is the base free flow speed for freeway segments, when you don't have something else measured.
What is 75.4 miles per hour
Roadway segments use this crash rate
Crash rate per hundred million vehicle miles (RHMVM)
This is the second step of the four-step travel demand forecasting process
What is Trip Distribution?
This factor accounts for varying flow rates across a study period.
What is the "peak hour factor"?
It's like density, but for time
What is occupancy?
Having a lateral clearance of less than 12 feet does this to the free-flow speed
What is lower it?
General Motors did this to American streetcars.
What is killed them?
This is a person or organization who will be affected by a transportation policy.
What is a stakeholder?
The average speed at which vehicles traverse a segment of roadway.
What is space mean speed?
In Greenshield's model, this is (Vf Kj) / 4
What is the capacity / maximum flow rate?
Having a high share of heavy vehicles does this to the free flow speed.
What is nothing at all?
This manual provides useful advice, but should not be taken as literal TRUTH when estimating transportation demand.
What is the ITE Trip Generation Manual?
This "leg" of Fricker's concerns the process of planning and building the transportation system.
What is "Putting the System in Place"?
The average speed at which vehicles pass a point on the roadway.
What is time mean speed?
In Poisson's model, this is the meaning of lambda
What is the average event rate?
If the demand volume is above this point, you need to calculate a congested speed.
What is the break point?
What is 35-40k?