Traffic Laws and Rules of the Road
What to master
Pennsylvania's rules chapter is mostly about right-of-way, speed, and positioning. Know the default speed limits: 25 mph in residential districts, 35 mph in urban business districts, and 55 mph on most other roads unless posted. Know that Pennsylvania's basic speed rule is reasonable and prudent for conditions - a posted limit is a ceiling, not a target. Understand right-of-way at uncontrolled intersections (yield to the vehicle on your right), at four-way stops (first to arrive goes first; simultaneous arrival means yield right), and when turning left (yield to oncoming traffic). Learn Pennsylvania's Steer Clear law: move over or slow down for emergency responders, tow trucks, and maintenance vehicles with lights flashing.
Traps the test sets
- Questions that pair a posted speed with bad weather - the correct answer is slow below the limit, not "maintain the limit."
- Left turns at green lights: a green arrow protects you, a solid green does not.
- Passing rules: never pass at a railroad crossing, on a hill crest, or within an intersection; solid yellow on your side forbids passing.
- Pedestrians in a crosswalk always have the right-of-way, even mid-block if marked.
Rule of thumb
At a four-way stop, count the order of arrival and yield to the right on a tie. If you cannot remember a specific number, choose the safest, most yielding option - the exam rewards caution.
Worked example
You approach a four-way stop at the same moment as a car to your right. You both intend to go straight. Who goes? The car on your right - a tie goes to the right-hand vehicle.