California Vehicle Code definition of
Engineering and traffic survey
CVC Section 627. (a) "Engineering and traffic survey," as used in this code,
means a survey of highway and traffic conditions in accordance with
methods determined by the Department of Transportation for use by
state and local authorities.
(b) An engineering and traffic survey shall include, among other
requirements deemed necessary by the department, consideration of all
of the following:
. . . (1) Prevailing speeds as determined by traffic engineering
. . . (2) Accident records.
. . . (3) hIGHWAY, TRAFFIC, AND ROADSIDE CONDITIONS NOT READILY APPARENT
to the driver.
(c) When conducting an engineering and traffic survey, local
authorities, in addition to the factors set forth in paragraphs (1)
to (3), inclusive, of subdivision (b) may consider all of the
. . . (1) Residential density, if any of the following conditions exist
on the particular portion of highway and the property contiguous
thereto, other than a business district:
. . . . . . (A) Upon one side of the highway, within a distance of a quarter
of a mile, the contiguous property fronting thereon is occupied by 13
or more separate dwelling houses or business structures.
. . . . . . (B) Upon both sides of the highway, collectively, within a
distance of a quarter of a mile, the contiguous property fronting
thereon is occupied by 16 or more separate dwelling houses or
. . . . . . (C) The portion of highway is longer than one-quarter of a mile
but has the ratio of separate dwelling houses or business structures
to the length of the highway described in either subparagraph (A) or
. . . (2) Pedestrian and bicyclist safety.