Exhibits J, Grade Crossings Standards Manual - Metrolink

iIiIITYPICAL LOOP LAYOUT DIMENSIONS1. LOOPS TO BE INSTALLED PER MANUFACTURER'S RECOMMENDATIONS.2. "A" - TYPICALLY 15' TO MAINTAIN DIMENSIONS "G" AND "E" MAY BEREDUCED IF ENTRANCE GATED CANNOT BE RELOCATED.3. "B" - TYPICALLY 15' MAY BE REDUCED IF EXIT GATES CANNOT BE RELOCATED.(SEE "E"),o o1R GATEPB4Rm1L GATE~ t ; ~æWiL----- T:~O-P-~1------¡4L 6~TEI:~o-p-~-r------i"A" : L_____.J______I "- '-______1.______JIt~- ~- ---- ---- ----- -- --------- --~iiILGATEPB----~~ _L99£' _ ~ J~-Q~~-----------J -lL§§~-_~-_-_-_-_-_-_-_-_-_-ll~~'~__lliB iiL-4. "C" - TYPICALLY 12", MAY VARY FROM 6" TO 12" DEPENDING ON PAVEMENTQUALITY.5. "D" - TYPICALLY 2' FROM EDGE OF TRAVELED WAY OR LANE LNE.6. "E" - 3'-3Y2' RECOMMENDED TO AVOID LOOP ACTIVATION WHEN A VEHICLECROWDS UNDER AN ENTRANCE GATE. DIMENSION MAY BE REDUCED IFGATES CANNOT BE RELOCATED IN ORDER TO MAINTAIN THE 5' MINIMUMREFERENCED IN DIMENSION "G".7. "F" - TYPICALLY 2' FROM LOOP TO EDGE OF TRAVELED WAY, SIMILAR TODIMENSION "D", MAY BE INCREASED UP TO 5' WHERE IMPROVED SHOULDEROR OTHER EXISTS OR FURTHER AS DETERMINED BY DIAGNOSTIC REVIEW.8. "G" - MAXIMUM LOOP WIDTH SHALL NOT EXCEED 8'. MINIMUM LOOP WIDTH OFENTRANCE AND EXIT LOOPS TYPICALLY NOT TO BE LESS THAN 5'. LOOPSBETWEEN TRACKS SHALL NOT BE LESS THAN 3' WIDE.9. "H" - MAXIMUM LOOP LENGTH 28'-6".10. "I" - MAXIMUM 13' BETWEEN LOOPS IN THE SAME LANE.I-TB--~-----i--------- --~----i---H=-~IIBII.i --I i--- -..------r--- ! - - PB ~-----, ~ i "E"i IIEII ii LOOP-3i-r.'e~---:3L ~TE i~o-p-~ 14~G~'--l-1"F" I . I I . _ _ _ _ __PB i PB ~ ¡3R GATE i 2L GATE ¡: i "011 I : i ifi "A"----~lPB2R GATENOTES:1), TOTAL AREA OF LOOP SHALL NOT EXCEED 144 SQ. FT.(EX. 8' MAX WIDTH X 18'. 144 SQ. FT.(EX. 6' X 24'. 144 SQ. FT.2), WHILE LOOPS MAY COVER MULTIPLE LANES. THEY SHALLNOT COVER PARTIAL LANES.3), VEHICLE DETECTION LOOPS SHALL BE PRE -FORMED, VIT ALWATER REPELLENT, WITH AN INTEGRAL CHECK LOOP SUCH ASTHAT MANUFACTURED BY RENO A8iE.4), SAW-CUTTING PAVEMENT FOR LOOP INSTALLATION SHALL BEAVOIDED.REVIIONS I FINAL REVEW BY' C&SORC DATE' 11/21/0BTHE SOUTHERN CALIFORNIAAPPROVED BYENGINEERING STANDARDSREGIONAL RAIL AUTHORITY iieii METROLINK8405() OA ë.. ~ \M OR IT'S OFFICERS OR AGENTS AL 'NONESHALL NOT BE RESPONSIBLEACER, COllATIONS N( SIGNALS ENGIt£ERt SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORllYFOR THE ACCURACY ORQ./i/ieR V' M..~e.700 SOUTH FLOWER STREETCOMPLETENESS OF THISREV. I DATE I DESCRPTIO I DES. I ENG. I DIRCTOR. ENGERIG AN CONTRUCTION PLAN SHEET LOS ANGELES, CALIFORNIA 90017SI N(NiVITALPLACEMENT FOR INDUCTIVE LOOPS- 1 OF 1USED WITH EXIT GATES il'ES8405