- published: 03 Apr 2016
- views: 112157
Headway is a measurement of the distance/time between vehicles in a transit system. The precise definition varies depending on the application, but it is most commonly measured as the distance from the tip of one vehicle to the tip of the next one behind it, expressed as the time it will take for the trailing vehicle to cover that distance. A "shorter" headway signifies a more frequent service. Freight trains might have headways measured in parts of an hour, metro systems operate with headways on the order of 1 to 5 minutes, and vehicles on a freeway can have as little as 2 seconds headway between them.
Headway is a key input in calculating the overall capacity of any transit system. A system that requires large headways has more empty space than passenger capacity, which lowers the total number of passengers or cargo quantity being transported for a given length of line (railroad or highway, for instance). In this case, the capacity has to be improved through the use of larger vehicles. On the other end of the scale, a system with short headways, like cars on a freeway, can offer very large capacities even though the vehicles carry few passengers.
Spend your nights here
We'll always be up late
Keep each other on
Chemicals can make us stay
I meant you're outta line
With your friends and all your jokes
Moving out tonight
Making phones that hot to hold
And you really didn't know
And you really didn't know
Spend your days here
And never give up now
You keep the children down
You're down for one more hour
Imagine I would feel
If your friends were all your dates
I'm moving out with her
Do you shake? you'll be ok
And if you really didn't know
I swear I really didn't know
So I'm sorry, so sorry
I'm sorry, oh no
and I'm sorry, so sorry
I'm sorry
Spend your nights here
We'll always be up late
Keep each other up
Chemicals can make us stay
I meant you're outta line
With your friends and all your jokes
Moving out tonight
Making phones that hot to hold
And if you really didn't know
I swear I really didn't know
So I'm sorry, so sorry
I'm sorry, oh no
And I'm sorry, so sorry