Traffic Signals, Signs and Pavement Markings
Written for aiforu2 as the source for a practice-test bank and the on-device tutor for the Ohio driver license knowledge test. The facts follow the official manual; the wording is ours.
Source: Ohio Driver Manual (Digest of Ohio Motor Vehicle Laws, HSY 7607, October 2025 printing), Ohio Bureau of Motor Vehicles, section 4 "Rules of the Road", traffic signals, traffic signs, lane pavement markings, two-way left turn lane and crosswalks (pp. 10–14).
Traffic signals
Signals are usually at intersections, red on top, yellow, then green; some are single lights or mounted sideways.
- Red: stop before the intersection and wait behind the stop line or crosswalk until green.
- Yellow: the light is about to turn red; use caution and prepare to stop.
- Green: go through with caution if the way is clear. A green arrow lets you turn in that direction without stopping.
- Flashing yellow: slow down and proceed with caution, ready to stop for traffic entering the intersection.
- Flashing red: come to a complete stop behind the line or crosswalk and go only when nothing is crossing your path.
- Dark or inoperable signal: treat it as a stop sign; yield and enter with caution.
Traffic signs
Signs announce rules, hazards, locations, directions and services; shape, color, symbol and wording tell you which kind you are looking at.
Regulatory signs state the law. The octagon means every vehicle in that lane stops before proceeding. The school speed limit sign sets the speed during restricted hours. Do Not Enter and Wrong Way guard the intersections of one-way roads and freeway exit ramps. One Way shows the only direction traffic may travel. Yield means stop only if other traffic is affected and give way to everything coming.
Prohibitory signs show a red circle with a slash, which means "no": whatever is drawn inside is forbidden, such as no left turn, no U-turn, no right turn or no bicycles.
Warning signs tell of possible danger ahead; they are usually yellow diamonds with black symbols or letters: roundabout ahead, narrow bridge (the vehicle nearest the bridge has the right-of-way), road curves ahead, downhill grade, an intersection where you must turn left or right, two-way traffic ahead, a pennant meaning passing is prohibited, bicycle crossing, limited clearance, a road branching ahead, a sharp right turn, a pedestrian crossing, and the round yellow railroad crossing advance sign.
Work zone signs are orange. Approaching a construction zone, be alert, slow down, follow the signs and watch for workers and equipment. A person with a sign or flag may direct traffic and you must obey them. Drums and cones keep traffic out of closed roads and dangerous areas. Give workers a "brake": be ready to stop suddenly, keep a space cushion for workers and equipment, and do not tailgate. Speeding in a work zone can bring doubled fines and jail.
Guide signs are square or rectangular in green, brown or blue; they point to cities and towns, intersecting roads, points of interest and services such as hospitals, fuel, food and lodging.
Route number signs show the type of road by shape and color: interstate, U.S., state, city, county or local, matching what maps and GPS apps display.
Pavement markings
Painted lines, arrows, words and symbols divide lanes, show where you may pass, assign turn lanes, define crosswalks and mark where to stop.
- White lines separate traffic moving in the same direction; they may be solid or broken.
- A solid yellow line separates traffic moving in opposite directions.
- A double solid yellow line: stay right of it, except to turn left across it or to pass a slow-moving vehicle such as a bicycle or a vehicle showing the slow-moving emblem.
- A solid yellow beside a broken yellow: the lane next to the broken line may pass; the lane next to the solid line may not.
- A broken yellow line: either direction may pass when safe.
Two-way left turn lane
A center lane bordered on each side by a broken yellow line inside a solid yellow line, with white two-way left-turn arrows, is for left turns only from either direction, entered just before the turn. It is not for through travel or passing.
Crosswalks
Crosswalks mark where pedestrians may cross, and not all are painted the same way. You must yield to pedestrians entering or in a crosswalk, and where a stop line is painted before the crosswalk you stop at the stop line.
Practise this with Ohio Driver License questions
More of this guide
The vision screening and 40-question knowledge test, the Temporary Instruction Permit (TIPIC) and its age rules, 24+8 hours of driver education and 50 logged hours, the five-marker maneuverability test, the road test, compliant vs. standard cards, probationary restrictions under 18, CDL classes, mopeds and motorcycles.
Ohio's required vehicle equipment and light distances, tread depth and the penny test, studded-tire dates, when headlights are required, seat and mirror adjustment, the safety belt law, fatigue and aggressive driving, the hands-free law with its penalties for drivers over and under 18, and how alcohol and drugs impair driving.
Ohio's speed limits from alleys to rural freeways and the assured-clear-distance rule, who yields to whom, the six places you must stop, steering and backing, right and left turns, turns on red, and how to use a roundabout.
Driving on the right, changing lanes, entering and leaving a freeway, how and when to pass and where passing is banned, stopping 15 to 50 feet from the tracks, the school bus stop law on roads with fewer than four lanes and four or more, and where you may never stop or park.
Ohio's 25/50/25 minimum insurance and when to prove it, BAC limits of .08, .04 and .02, Administrative License Suspension for failing or refusing a test, OVUAC for drivers under 21, the 6- and 12-point letters and suspensions, probationary suspensions under 18, driving under suspension, riding in cargo areas and the child safety seat and booster law.
What to do when pulled over, when headlights are required, night and fog driving, winter skids, orange work zones, the 20-to-30-second visual search, curves, slippery roads and hydroplaning, perception and reaction time, the four-second rule, space cushions, horn and signal use, and preventing heatstroke in parked cars.
Yielding to pedestrians and blind pedestrians, giving motorcycles a full lane and four seconds, the three-foot bicycle passing rule, truck No Zones and stopping distances, the Move Over law, passing slow-moving vehicles, skids and dark signals, brake, accelerator and tire failures, and what to do after a crash.