2_a_driver_handbook
When two vehicles meet on a steep road where neither can pass, the vehicle facing downhill must yield the right - of - way by backing up until the vehicle going uphill can pass.

0002_0001__When when 0002_0004__meet meet 0002_0001__When->0002_0004__meet [restriction] 0002_0026__by by 0002_0001__When->0002_0026__by [scope] 0002_0002__two_0002_0003__vehicles two_vehicles 0002_0004__meet->0002_0002__two_0002_0003__vehicles [arg0] 0002_0006__a_0002_0008__road a_road 0002_0004__meet->0002_0006__a_0002_0008__road on[nim] 0002_0018__must must 0002_0026__by->0002_0018__must [scope] 0002_0029__until until 0002_0026__by->0002_0029__until [restriction] 0002_0007__steep steep 0002_0006__a_0002_0008__road->0002_0007__steep [attrib] 0002_0010__neithe neither[quant] 0002_0011__can can 0002_0010__neithe->0002_0011__can [scope] z_0002_5007 _ 0002_0010__neithe->z_0002_5007 [restriction] 0002_0011__can->0002_0006__a_0002_0008__road [nim] 0002_0012__pass pass 0002_0011__can->0002_0012__pass [scope] 0002_0012__pass->z_0002_5007 [arg0] 0002_0016__facing_0002_0017__downhill facing_downhill 0002_0014__the_0002_0015__vehicle the_vehicle 0002_0016__facing_0002_0017__downhill->0002_0014__the_0002_0015__vehicle [inv][arg0] 0002_0019__yield yield 0002_0018__must->0002_0019__yield [scope] 0002_0019__yield->0002_0014__the_0002_0015__vehicle [arg0] 0002_0020__the_0002_0021__right the_right 0002_0019__yield->0002_0020__the_0002_0021__right [arg1] 0002_0025__way way 0002_0020__the_0002_0021__right->0002_0025__way of 0002_0027__backing_0002_0028__up backing_up 0002_0029__until->0002_0027__backing_0002_0028__up [scope] 0002_0034__can can 0002_0029__until->0002_0034__can [restriction] 0002_0027__backing_0002_0028__up->0002_0014__the_0002_0015__vehicle [arg0] 0002_0035__pass pass 0002_0034__can->0002_0035__pass [scope] 0002_0032__going_0002_0033__uphill going_uphill 0002_0030__the_0002_0031__vehicle the_vehicle 0002_0032__going_0002_0033__uphill->0002_0030__the_0002_0031__vehicle [inv][arg0] 0002_0035__pass->0002_0030__the_0002_0031__vehicle [arg0]
arc(r_0002_0001__When,r_0002_0004__meet,restriction).
arc(r_0002_0001__When,r_0002_0026__by,scope).
arc(r_0002_0004__meet,r_0002_0002__two_r_0002_0003__vehicles,arg0).
arc(r_0002_0004__meet,r_0002_0006__a_r_0002_0008__road,r_0002_0005__on__nim).
arc(r_0002_0006__a_r_0002_0008__road,r_0002_0007__steep,attrib).
arc(r_0002_0010__neither__quant,r_0002_0011__can,scope).
arc(r_0002_0010__neither__quant,z_0002_5007,restriction).
arc(r_0002_0011__can,r_0002_0006__a_r_0002_0008__road,nim).
arc(r_0002_0011__can,r_0002_0012__pass,scope).
arc(r_0002_0012__pass,z_0002_5007,arg0).
arc(r_0002_0016__facing_r_0002_0017__downhill,r_0002_0014__the_r_0002_0015__vehicle,inv_arg0).
arc(r_0002_0018__must,r_0002_0019__yield,scope).
arc(r_0002_0019__yield,r_0002_0014__the_r_0002_0015__vehicle,arg0).
arc(r_0002_0019__yield,r_0002_0020__the_r_0002_0021__right,arg1).
arc(r_0002_0020__the_r_0002_0021__right,r_0002_0025__way,r_0002_0023__of).
arc(r_0002_0026__by,r_0002_0018__must,scope).
arc(r_0002_0026__by,r_0002_0029__until,restriction).
arc(r_0002_0027__backing_r_0002_0028__up,r_0002_0014__the_r_0002_0015__vehicle,arg0).
arc(r_0002_0029__until,r_0002_0027__backing_r_0002_0028__up,scope).
arc(r_0002_0029__until,r_0002_0034__can,restriction).
arc(r_0002_0032__going_r_0002_0033__uphill,r_0002_0030__the_r_0002_0031__vehicle,inv_arg0).
arc(r_0002_0034__can,r_0002_0035__pass,scope).
arc(r_0002_0035__pass,r_0002_0030__the_r_0002_0031__vehicle,arg0).


IP-MAT PP-SCON P-CONN When IP-ADV NP-SBJ NUM two NS vehicles VBP;~I meet PP-NIM P-ROLE on NP D a ADJP ADJ steep N road IP-REL ADVP-NIM RADV where NP-SBJ Q;_nphd_ neither MD;~cat_Vi can IP-INF-CAT VB;~I pass PUNC , NP-SBJ D the N vehicle IP-PPL VAG;~Ip facing ADVP-CLR ADV downhill MD;~cat_Vi must IP-INF-CAT VB;~Tn yield NP-OB1 D the N right PUNC - PP P-ROLE of PUNC - NP N way PP-SCON P-CONN by IP-PPL VAG;~phr_Vp backing RP up PP-SCON P-CONN until IP-ADV NP-SBJ D the N vehicle IP-PPL VAG;~Ip going ADVP-CLR ADV uphill MD;~cat_Vi can IP-INF-CAT VB;~I pass PUNC .
( (IP-MAT (PP-SCON (P-CONN When;{when})
                   (IP-ADV (NP-SBJ;{VEHICLE} (NUM two;{two})
                                             (NS vehicles;{vehicle}))
                           (VBP;~I meet;{meet})
                           (PP-NIM (P-ROLE on;{on})
                                   (NP (D a;{a})
                                       (ADJP (ADJ steep;{steep}))
                                       (N road;{road})
                                       (IP-REL (ADVP-NIM (RADV where;{where}))
                                               (NP-SBJ;{VEHICLE} (Q;_nphd_ neither;{neither}))
                                               (MD;~cat_Vi can;{can})
                                               (IP-INF-CAT (VB;~I pass;{pass})))))))
          (PUNC ,)
          (NP-SBJ;{DOWNHILL_VEHICLE} (D the;{the})
                                     (N vehicle;{vehicle})
                                     (IP-PPL (VAG;~Ip facing;{face[downhill]})
                                             (ADVP-CLR (ADV downhill;{downhill}))))
          (MD;~cat_Vi must;{must})
          (IP-INF-CAT (VB;~Tn yield;{yield})
                      (NP-OB1 (D the;{the})
                              (N right;{right})
                              (PUNC -)
                              (PP (P-ROLE of;{of})
                                  (PUNC -)
                                  (NP (N way;{way})))))
          (PP-SCON (P-CONN by;{by})
                   (IP-PPL (VAG;~phr_Vp backing;{back[up]})
                           (RP up;{up})
                           (PP-SCON (P-CONN until;{until})
                                    (IP-ADV (NP-SBJ (D the;{the})
                                                    (N vehicle;{vehicle})
                                                    (IP-PPL (VAG;~Ip going;{go[uphill]})
                                                            (ADVP-CLR (ADV uphill;{uphill}))))
                                            (MD;~cat_Vi can;{can})
                                            (IP-INF-CAT (VB;~I pass;{pass}))))))
          (PUNC .))
  (ID 2_a_driver_handbook))