Every person convicted of a traffic infraction
for a violation of any of the provisions of this chapter other than
speeding tickets shall for a first conviction thereof be punished
by a fine of not more than $100 or by imprisonment for not more than
15 days, or by both such fine and imprisonment; for a conviction of
a second violation, both of which were committed within a period of
18 months, such person shall be punished by a fine of not more than
$200 or by imprisonment for not more than 45 days, or by both such
fine and imprisonment; upon a conviction of a third or subsequent
violation, all of which were committed within a period of eighteen
months, such person shall be punished by a fine of not more than $300
or by imprisonment for not more than 90 days or by both fine and imprisonment.