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43 CHAPTER FIVE PAVEMENT MARKINGS NOT SPECIFICALLY ADDRESSED IN THE MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES ARROWS AND SYMBOLS 1300 The design standards for California show that wrong-way 300 arrows (one in each direction) are used at locations near intersections and at a maximum of one-mile spacing where motorists could perceive that they are on a one-way roadway 150 130 when, actually, they are on a two-lane, two-way highway. 0 300 The following are some typical situations: 2400 150 · Construction sites where a two-lane highway is being 190 converted to a freeway or an expressway. 0 · Two-lane, two-way highways where ultimate freeway 71.25° or expressway right-of-way has been purchased and 570 grading for the full width has been completed. · Two-lane, two-way highways following long sections FIGURE 11 Diverge arrow used by New York State DOT of multi-lane freeway or expressway. (Source: New York DOT pavement marking details, October 22, 2001, Drawing M685-5R1, Sheet 5 of 5). The design standards for Georgia show that a different spacing pattern is specified for lane-use arrows and ONLY messages on intersection approaches at the end of exit ramps. MISCELLANEOUS TREATMENTS The design standards for Georgia also show that U-turn The design standards for Alaska show that overhead snow arrows and combination U-turn/left-turn arrows are available poles (delineators cantilevered to the edge line suspended for use. from a steel pipe that is mounted 12 ft from the edge line) are available. The design standards for New York state show that a diverge arrow (see Figure 11) is available for use. The design standards for Colorado show that solid 8-in.- wide lane lines separating mandatory left-turn lanes from adjacent through lanes are extended beyond the stop line WORD MESSAGES and may be curved slightly to the left just before they terminate. Lane lines separating mandatory right-turn The design standards for California show that a STOP word lanes from adjacent through lanes are extended beyond marking is placed such that the tops of the letters are 8 ft from the stop line to the extension of the edge line of the cross the stop line in advance of all stop lines at STOP sign con- street and are curved slightly to the right just before they trolled intersections. terminate. The design standards for California also state that the The design standards for Georgia show a design for a SLOW SCHOOL XING word marking shall be used in combination left-turn/U-turn pavement marking arrow. advance of all yellow school crosswalks that are not con- trolled by STOP signs, YIELD signs, or traffic signals. The The design standards for Montana show that designs for his- words shall be yellow with the final word in the sequence, torical marker turnouts, mailbox turnouts, and chain-up areas XING, at least 100 ft in advance of the crosswalk. The are included in the Montana Traffic Engineering Manual. SCHOOL XING word marking shall be used in advance of all white school crosswalks. The SCHOOL word marking The design standards for New York show that when a shall be restricted to a single lane. climbing lane is provided on a one-way roadway, a double
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44 broken line (10-ft segments with 30-ft gaps) starts at the turn lane in the other direction in a paved center median upstream end of the full-width lane and ends 600 ft from area. the downstream end of the full-width lane. A partial bar- rier line (a 4-in.-wide solid line on the left-hand side and a The design standards for the District of Columbia note 4-in.-wide broken line with 10-ft segments and 30-ft gaps that on Pennsylvania Avenue between 3rd Street and 15th on the right-hand side) starts at the downstream end of the Street all pavement markings are white, including the cen- double broken line and ends 100 ft from the downstream terline, because this is a special historic street and does not end of the full-width lane. Lane-reduction arrows are not follow the MUTCD. shown. The design standards for the city of Los Angeles state that The design standards for Virginia include a design for pavement markings associated with pedestrians and schools, the transition from a left-turn lane in one direction to a left- such as crosswalks and school word markings, may be yellow.