Separate out vehicles from uses

[e-lo]

There are required variables in Use Definitions which describe vehicle characteristics which do not necessarily nest within the 'use'.

Specifically, I am thinking of the persons_per_vehicle and pce:

var	type	req	comments
persons_per_vehicle	DOUBLE	Required	Average persons per vehicle. Used to compute person-based performance measures (0 for non-travel uses)
pce	DOUBLE	Required

Suggest:

1. separating out vehicle information from use requirements information (or at least making it optional, with a blank invoking some default)
2. allowing uses or use groups to have "AND" "OR" or "NOT" designations (i.e. all bikes but for class 3 e-bikes)

Use requirements are things like:

• max weight
• public transit vehicles
• TNC vehicles and taxis
• commercial vehicles
• minimum pax #

Vehicle information is for differentiating:

• articulated bus
• delivery van
• semi
• electric cargo bike
• electric roadsters