Highways and Highway Transportation - George R. Chatburn

	Tons
One-horse wagon, loaded, 0.88; unloaded	0.28
Two-horse wagon, loaded, 1.57; unloaded	0.47
Four-horse wagon, loaded; 3.88; unloaded	0.54
Pleasure vehicles, one-horse, 0.28; two-horse	0.47
Rubber-tired pleasure vehicle	0.28
Saddle horse	0.50
Motor cycle	0.20
Excessively heavy vehicle	3.94
Motor, runabout, 1.68, touring car	2.00
Motor dray, loaded, 2.43; unloaded	1.23
Draught horses	0.50

In a traffic census taken by the Borough of Brooklyn, New York, the weights were reduced to traffic units per minute per foot width of roadway which was called density. By this rule, “the number of vehicles passing a given point in eight hours times the traffic unit divided by 8 times 60 times the width of the roadway equals the density.” The weights and traffic units used were:

Rubber-tired vehicles	Weight in tons		Traffic value
Large automobile trucks, loaded	9		5
Large automobile trucks, empty	4		4
Small automobile trucks, loaded	3		3
Small automobile trucks, empty	1	¹⁄₂	2
Pleasure automobiles	1	³⁄₄	1
Carriages	2		2
Steel-tired vehicles ranged in weight from 1 to 7¹⁄₂tons and in traffic value from 2 to 10.

A suggested form for a traffic census sheet presented by a committee appointed to study the question of traffic censuses to the New Jersey State Association of Roads is shown on [p. 245]. This sheet also bears, for the use of the office, blanks for the tabulation of the traffic by classes:

Kind of Vehicle		No.	Weight	Vehicle-Tons
Motor cycle		.....	0.25	..........
Light-horse, empty		.....	1.25	..........
Light-horse, loaded		.....	2.00	..........
Heavy two-horse, empty		.....	3.20	..........
Heavy two-horse, loaded		.....	6.00	..........
Light pleasure motor car		.....	1.50	..........
Heavy pleasure motor car		.....	2.50	..........
Light motor truck, empty		.....	1.00	..........
Light motor truck, loaded		.....	2.50	..........
Heavy motor truck, empty		.....	5.00	..........
Heavy motor truck, loaded		.....	10.50	..........
Specials:	10 tons	.....	.....	..........
	15 tons	.....	.....	..........
	Over 15 tons	.....	.....	..........
Total		.....	.....	..........
Tonnage per foot width of pavement			....................
Tonnage per foot width of roadway			....................

SUGGESTED FORM OF TRAFFIC CENSUS SHEET

Traffic Census Sheet County Number........ Station No....... County......
State Highway Department of New Jersey................................ 192...
............................................... Road at..........................................
Exact location................................................................................
Count taken..............from...........to.............from...........to..............

Time Count Was Taken					Motor Cycle	Light Horse		Heavy Horse		Pleasure Motor Cars		Light Motor Trucks		Heavy Motor Trucks		Specials			Street Cars	Hourly Totals
Time Count Was Taken					Motor Cycle	Empty	Loaded	Empty	Loaded	Light	Heavy	Empty	Loaded	Empty	Loaded	10- tons	15- tons	Over 15-ts.	Street Cars	Hourly Totals
6	a. m.	to	7	a. m.
7	a. m.	to	8	a. m.
8	a. m.	to	9	a. m.
9	a. m.	to	10	a. m.
10	a. m.	to	11	a. m.
12	noon	to	1	p. m.
1	p. m.	to	2	p. m.
.............
3	a. m.	to	4	a. m.
4	a. m.	to	5	a. m.
5	a. m.	to	6	a. m.
Total

Of above motor vehicles.........carried foreign licenses as follows.........
................................... Weather.....................................................
Type of pavement....................... Condition of pavement...................
Width of roadway........ Width of pavement........ Traffic.... Narrow ...
Tires................... Special............... Inspector..................................
Notes............................................ Checked by...............................

Destructive Factors.