Reservations can matter
Camping, shuttles and accommodations can be scarce in peak periods.
Use official park access information
Parking and shuttle systems change as parks manage congestion.
Weather varies with elevation
Conditions at a pass can differ from nearby valleys.
Wildlife rules are serious
Stop only where legal and keep the required distance from animals.
General travel-planning information only. Drivers must follow licence restrictions, traffic laws and current road-authority directions. Do not continue driving when fatigued or when weather, closures or road conditions make the trip unsafe.