a. Who makes the regulations (ordinances, rules)?
b. Who enforces them, such as the direction and speed of traffic?
c. The encumbering of sidewalks and streets.
d. The restriction of certain streets.
e. Remedies for the congestion of traffic, as tunnels, belt lines, etc., for freight.
f. The growth of business limited by traffic.
4. Sidewalks.
a. Regulations as to laying, repairing.
b. Who has jurisdiction over them.
c. The stoop line.