(a) The traffic engineer shall conduct studies and investigations of the public streets and highways within the city and shall study the needs of the public for areas on the public streets for the exclusive use of busses during certain hours of the day, the width and length of areas on public streets where bus lanes are desired and, after making such studies, the traffic engineer shall designate those areas on public streets and highways of the city where areas for the exclusive use of busses are required and should be in effect by means of appropriate signs and street markings giving notice that only busses may use an area of a public street or highway during certain hours of the day. The traffic engineer may change areas designated for the exclusive use of busses from time to time as required by studies and investigations. The traffic engineer shall also keep accurate records of all bus lane designations, sign installations, and street markings.
(b) A person commits an offense if he operates a motor vehicle, other than a bus in an area upon a public street or highway within the city designated by a sign and street marking as an area for the exclusive use of busses.
(c) It is a defense to prosecution under this section that an operator of a motor vehicle is in an area designated for the exclusive use of busses for the purpose of making a right turn and has entered the area as close as practicable to the place where a right turn was intended to be made.
(d) In this section bus means a public or private motor vehicle designated for the transportation of more than 10 passengers. (Ord. Nos. 14584; 14648)