Rules and Guidelines

Note: Caltrain may alter the rules/guidelines at any time, as necessary.


  • The conductor, at his or her discretion, may decline transportation or revise the handling of bicycles due to crowded trains, bicycle condition, or unsafe conditions.
  • Bikes are not allowed to be locked to the train.
  • There is no charge to bring a bicycle on board.


  • For safety reasons, bicycles cannot be taken on escalators and must not be ridden in train stations, on station platforms or ramps.


  • Passengers with bicycles board first on designated bike cars.
  • In order to reduce delays, the first cyclists boarding should move in as far as possible so other cyclists have space to board the train.
  • Stack bikes so that bikes with nearby destinations are accessible.

Traditional Bicycle Types

  • Only single-rider bicycles are permitted on trains.
  • Maximum bicycle length is 80 inches, and bikes must not protrude into the aisle.
  • No fuel-powered, tandem or three-wheel bikes are permitted.
  • Training wheels, detachable or collapsible trailers or large, bulky attachments which expand bike width, such as saddlebags, baskets, backpacks or briefcases, are not allowed.
  • Bikes must have no protrusions which could cause injury or damage.
  • Bicycles must be kept clean and free of excessive dirt and grease.

Folding Bikes

  • Folding bikes are allowed on any train car as they are no wider than 32 inches at the widest point.
  • Folding bikes must be in the folded position prior to boarding and must remain under the control of the owner while on board.
  • Folding bikes must be able to be stored under the seat or be placed in the luggage racks provided by Caltrain.
  • Folding bikes may not be placed on seats and must not block aisles, stairs or vestibules.
  • Folding bikes may not be stored in the space reserved for passengers wheelchairs.
  • Folding bikes that are not in the bike rack must remain folded until the passenger has fully left the train.
  • Dirt or grease from folding bikes must not be transferred to the interior of the car, other passengers, or crew members. If the bike is dirty, it must be placed in a bag to prevent soiling of the rail car. It is at the conductors' discretion to reject the boarding of a folding bike that they determine is not protected and appears to be greasy or dirty.