PUBLIC ROAD MILEAGE AND REVENUES, 1914. 
Table 4. — Analysis of mileage on various bases. 
Total mileage. 
Surfaced mileage. 
State. 
Per square mile 
area. 
Per 1,000 rural 
population. 
Per square mile 
area. 
Per 1,000 rural 
population. 
1904 
1909 
1914 
1904 
1909 
1914 
1904 
1909 
1914 
1904 
1909 
1914 
New Jersey 
New York 
1.97 
1.54 
2.21 
1.97 
1.67 
1.95 
1.97 
1.66 
2.22 
26.74 
37.44 
34.9 
23.6 
41.1 
28.8 
23.5 
41.2 
30.17 
0.32 
.12 
.048 
0.45 
.268 
.075 
0.784 
.328 
.22 
4.4 
2.98 
.76 
5.4 
6.6 
1.11 
9.4 
8.1 
3.29 
DEVELOPMENT OF NEW TYPES OF HIGHWAY. 
On account of the rapid increase in motor-vehicle traffic and the 
fact that more study is being devoted to the selection of types best 
adapted to traffic needs, the types of road surfaces have undergone 
considerable changes during the past 10 years. To illustrate this 
io % 
20 7„ 
30 7» 
40 7o 
SO > 
/ 1904 
NEW YORK j 1909 
HhHHHHH 
I 1914 
rn^rr- T^m iiiiiiiiii 
I ! 1 1 lir 
( '904 
....... minium 
NEW JERSEY] 1909 
*9«4 
r«904 
PENNSYLVANIA] 1909 
1 1914 
J j 
Fig. 1. 
-Percentage of surfaced roads in New York, New Jersey, and Pennsylvania for the years 1904, 
1909, and 1914. 
point it may be stated that of the 10,485 miles of surfaced roads in 
the Middle Atlantic States in 1904, approximately 60 per cent was 
plain macadam and 40 per cent was gravel. In 1909, of the 19,532 
miles of sur/aced road, 51 per cent was macadam, 47 per cent gravel, 
1 per cent bituminous macadam, and 1 per cent other materials. In 
1914, however, of a surfaced mileage of 24,482, 39.3 per cent was 
macadam, 36.3 per cent gravel, 15.4 per cent bituminous macadam, 
3.8 per cent brick and concrete, and 5.2 per cent of other materials. 
It should be stated, however, in this connection that the 24,482 miles 
do not represent the total mileage of surfaced roads in 1914, as in 
the case of Pennsylvania it was impossible to secure detailed inform- 
ation regarding the type of surfaced roads in second-class townships. 
The decrease in the percentage of macadam roads from 51 per cent 
