Home / Free CDL Practice Tests / Passenger (P) Endorsement / Emergency Exits & Evacuation / Test Emergency Exits & Evacuation Practice Test Question 1 of 9 Under what circumstances may a bus driver operate the vehicle with an emergency exit door or window open? A Never; the driver must never drive with an open emergency exit door or window B Only during daytime hours in clear weather C Only if the bus is traveling under 25 mph D Only on routes shorter than 10 miles Submit Answer ✓ Correct! Correct. The CDL manual states plainly that a driver must never drive with an open emergency exit door or window. 49 CFR 383.117(a)(2) ✗ Not quite. Wrong. There is no weather-based or daytime exception in the manual for this rule. The correct answer is A: Never; the driver must never drive with an open emergency exit door or window. 49 CFR 383.117(a)(2) ✗ Not quite. Wrong. There is no speed-based exception; the prohibition is absolute regardless of how slowly the bus is moving. The correct answer is A: Never; the driver must never drive with an open emergency exit door or window. 49 CFR 383.117(a)(2) ✗ Not quite. Wrong. There is no route-length exception; the rule applies on every trip, short or long. The correct answer is A: Never; the driver must never drive with an open emergency exit door or window. 49 CFR 383.117(a)(2) Next Question