LOS ANGELES — Waymo is recalling 3,791 autonomous vehicles after one of its driverless cars detected floodwater on a San Antonio roadway but continued forward before becoming stranded, according to a safety recall report filed with the National Highway Traffic Safety Administration. The recall lands as Los Angeles officials are moving to support new statewide restrictions on autonomous vehicle companies — including response-time rules, local incident technicians, and penalties when driverless vehicles block streets, bike lanes, emergency access routes or fire hydrants. Westside Current reported this week that an LA City Hall resolution calls for the city to formally support Senate Bill 1246, a proposal by Sen. Dave Cortese aimed at imposing new operating rules on autonomous vehicle companies in California. The federal recall affects vehicles equipped with Waymo’s fifth- and sixth-generation automated driving systems, according to NHTSA documents. Federal regulators said the software may allow a vehicle to “slow and then drive into standing water on higher speed roadways.” Entering a flooded roadway can cause loss of vehicle control, increasing the risk of a crash or injury, according to NHTSA. According to Waymo’s recall report, the April 20 incident happened when an unoccupied autonomous vehicle encountered an “untraversable flooded section” of roadway with a 40 mph speed limit. Waymo told regulators the vehicle detected the floodwater but proceeded at reduced speed before becoming stranded. The San Antonio Express-News reported the vehicle was swept away by floodwaters and later recovered downstream. No one was injured, and the vehicle was unoccupied. Waymo told federal regulators it imposed additional operational restrictions the same day in areas and conditions where vehicles faced an elevated risk of encountering flooded higher-speed roadways. The company also said its Safety Board reviewed the issue on April 24 and decided to conduct a recall. Waymo said it began