NARA Collection mdt — Collection mdt

This file contains the results from two surveys, the Dwelling Unit Survey and the Home Interview Survey, Trip Summary. Survey data are from a 5-percent sample of dwelling units and trips in the Baltimore metropolitan area. The Dwelling Unit Survey has data identifying each unit surveyed by location, type of structure, number of residents (total, number over age five, number employed and making trips), number of trips (by total, car driver, car passenger, transit, taxi, truck or school bus), number of cars owned, status of driver's license, and sample weights. The Home Interview Survey, Trip Summary file has data identifying persons by occupation, industry, and sex. Data relating to trips include the origin and destination (by sub zone, land use, time, and purpose), mode of travel, car occupancy, vehicle type, type of parking, and sample weights.

This file contains the results from two surveys, the External Survey and the Truck Survey. External Survey data are from a 25-percent sample of trips made by persons entering, leaving, or passing through the Baltimore metropolitan area. The External Survey records have data identifying each trip surveyed by point of entry and exit; month, day, and hour; origin and destination; land use; purpose; and intermediate stop (if made) in the area. Also included are vehicle data identifying the vehicle type and occupancy, including load and commodity for trucks, and sample weights. The Truck Survey contains trip data from a 15-percent sample of trucks registered in the Baltimore metropolitan area. Data identify the truck by the sample number, year of manufacture, truck type, gross weight, industry, mileage, number of stops, and a sample weight. Trip data include month and day of trip; trip number; origin and destination by sub zone, land use, and purpose; time and commodity carried.

This file contains data identifying information about the connector roads between each of two node points on Baltimore metropolitan area maps. The data includes the jurisdiction, distance, speed in each direction at morning and evening peak times and average speed for each direction, capacity, actual number of vehicles, and an indicator of one way streets.