* Green: Marks the routes and ramps where trucks are permitted; also marks the travel route to services and terminals
* Red: Marks the routes and ramps where trucks are prohibited; also marks the end of designated routes
Road Markings
Road markings have the same force of law as signs or traffic signals.
Yellow center lines: Separate traffic flow going in opposite directions
White lines: Separate traffic going the same way when there is more than one lane; show edges of roads
Dashed lines: On a motorists side of the center line of the road mean that passing is permitted when safe
Solid line: On a motorists side of the center line means do not pass
Road arrows: When used with other signs, show the correct direction a motorist must make in that particular lane
White dashed lines: Separate traffic lanes on multi-lane highways
Yellow solid lines: Prohibit passing. Do not cross the solid yellow line to pass. Stay in the lane. Keep to the right when driving slowly
Yellow solid and dashed lines: Control passing. If the solid yellow line is on the motorists side of the road, do not pass. Pass only if the dashed line is on the motorists side of the road. A pass must be completed before the yellow dash lines become solid
Edge lines: Separate the shoulder from the travel lane and show the edges of highways; Yellow edge lines separate the shoulder from the travel lane and show the edge of the highway
White crosswalks: Indicate pedestrian crossing areas. Pedestrians should use these areas when crossing the road. At intersections where stop lines are missing stop before the crosswalk when required to stop by traffic signs or signals, or for pedestrians
White stop lines: Show where to stop at stop signs or traffic signals
White special markings: Show special conditions, such as STOP AHEAD, SCHOOL and R X R, as a motorist alert. At some railroad crossings, there may be a crossbuck, flashing lights and/or gate lowered across the road as a train approaches. The pavement markings, signs and crossbucks are passive warnings; the flashing lights and lowered gates are active warnings. A motorist must always yield to trains
White diamonds: Indicate high occupancy vehicle (HOV) lanes reserved for a particular vehicle type or vehicles carrying multiple riders, as identified by posted regulatory signs. Such signs will also indicate hours that HOV lanes are in operation. HOV lanes may also be marked with white diamonds painted on the pavement of the lane
Special Warning Signs
These signs alert motorists to slow-moving vehicles. A fluorescent and reflective orange triangular sign indicates slow-moving vehicles, such as farm and construction equipment operating on public highways. The operators must obey all traffic rules and place a slow-moving vehicle sign on the back of their vehicles to warn approaching motorists.
Other
Rumble strips
Transverse and longitudinal rumble strips are small indentations or narrow, raised strips on the highway or shoulder that are put there to alert the motorist there is a decision point ahead (such as a four-way intersection after miles of uninterrupted travel). As the strips vibrate the steering wheel and make a noise, they will wake the motorist who may have dozed off or caution the motorist about the danger ahead. Rumble strips will not damage a vehicle. They are meant to get a motorist to drive slowly. They are almost always used with a cautionary sign.
Speed Humps/Speed Bumps
Other types of speed control devices include speed humps and speed bumps. A speed hump is a low ridge that runs across a street and that is designed to slow down cars. A speed hump is a longer, flatter version of a speed bump, which is more raised.
Roundabouts
A roundabout is a one-way, circular intersection in which traffic flows around a center island. Roundabouts are designed to meet the needs of all road users drivers, pedestrians, pedestrians with disabilities, and bicyclists. A roundabout eliminates some of the conflicting traffic, such as left turns, which cause crashes at traditional intersections. Because roundabout traffic enters or exits only through right turns, the occurrence of severe crashes is substantially reduced.