This page has older content

Please see Related Projects on this page for current project information. See Travel & Transit Updates for current travel updates. We are keeping this page as a record of SFMTA service and outreach.

LiDAR survey and nighttime traffic alert on Market St. (1/3)

Share this:
Service Affected

UPDATE: Survey moved to Saturday early morning.

This weekend, San Francisco Public Works and the San Francisco Municipal Transportation Agency will be performing a truck-mounted Light Detection and Ranging (LiDAR) survey of Market Street. This visual mapping survey is the first step to doing detailed design work for the Better Market Street project. We will gather accurate information on the exact locations of features and utilities on Market Street – curbs, BART portals, light poles, building facades, trees, fire hydrants, sidewalk and street elevations and more -- that will enable us to move from conceptual to detailed designs and then on to construction.

The LiDAR survey will take place in the early morning hours of Saturday, January 2, 2016.  To ensure an accurate and complete survey, please help us spread this important information about traffic restrictions and the Better Market Street LiDAR survey:

  • The survey will take place between 2 a.m. – 6 a.m. on Saturday, Jan. 2, 2016.
  • Stopping or parking on Market Street and the adjacent side streets is prohibited between midnight and 6 a.m. to ensure the street is clear for the survey. Tow-away signs have been posted.
  • The survey truck will run along Market Street between Guerrero Street and Steuart Street four times in order to get an accurate representation of all the features.
  • The truck also will measure the street features along all the side streets in the project area.
  • There are temporary tow-away signs posted along Market Street and in zones along all the cross streets in the vicinity so that vehicles don’t block the “view” of the curb. PLEASE OBEY THE TEMPORARY TOW-AWAY SIGNS.
  • The LiDAR truck will be escorted by a police motorcade as it cannot stop along Market Street for any reason, since that will distort the data collection.
  • Traffic on the cross streets will be momentarily stopped and required to wait up to 2 minutes while the survey motorcade passes.
  • The curb lanes will be momentarily closed due to the survey motorcade. Traffic in the curb lane will be shifted to the center lane as the survey motorcade passes.
  • Private cars, taxis, commercial vehicles and bicyclists are encouraged to use adjacent parallel streets such as Mission Street during these pre-dawn hours.
  • The LiDAR truck will run with the flow of traffic -- PLEASE STAY ALERT AND DRIVE SLOWLY.
  • The SFMTA signal shop will place all traffic signals on Market Street between Guerrero and Steuart onto flashing red for all directions for everyone’s safety.

The LiDAR survey method is a quick, efficient, non-invasive surveying technique that is used around the world. The LiDAR method was chosen to get accurate information while minimizing travel impacts on one of the City’s busiest corridors.

Stay tuned for more information on the status of the Better Market Street project and next steps on our project page here