▁safe ▁traffic ▁flows ; ▁ ▁be ▁scale d ▁to ▁match ▁the ▁traffic ▁flow ▁( i . e . ▁wide ▁and ▁strong ▁enough ▁to ▁safely ▁carry ▁the ▁size ▁and ▁quantity ▁of ▁ped est ri ans ▁and ▁vehicles ▁intended ▁to ▁use ▁it ); ▁ ▁be ▁maintained ▁appropri ately ; ▁and ▁ ▁be ▁signed ▁and ▁lit ▁to ▁disc ou rage ▁beach ▁users ▁from ▁creating ▁their ▁own ▁alternative ▁cross ings ▁that ▁may ▁be ▁more ▁destruct ive ▁to ▁the ▁beach head . ▁ ▁Con crete ▁r amp ▁or ▁steps ▁A ▁concrete ▁r amp ▁should ▁follow ▁the ▁natural ▁profile ▁of ▁the ▁beach ▁to ▁prevent ▁it ▁from ▁changing ▁the ▁normal ▁flow ▁of ▁waves , ▁long sh ore ▁curr ents , ▁water ▁and ▁wind . ▁ ▁A ▁r amp ▁that ▁is ▁below ▁the ▁beach ▁profile ▁will ▁tend ▁to ▁become ▁buried ▁and ▁ce ase ▁to ▁provide ▁a ▁good ▁surface ▁for ▁veh icular ▁traffic . ▁ ▁A ▁r amp ▁or ▁st air ▁that ▁pro tr udes ▁above ▁the ▁beach ▁profile ▁will ▁tend ▁to ▁dis rupt ▁long sh ore ▁curr ents ▁creating ▁depos its ▁in ▁front ▁of ▁the ▁r amp , ▁and ▁sc our ing ▁behind . ▁ ▁Con crete ▁ram ps ▁are ▁the ▁most ▁expensive ▁veh icular ▁beach ▁access es ▁to ▁construct ▁requiring ▁use ▁of ▁a ▁quick - d ry ing ▁concrete ▁or ▁a ▁c of fer dam ▁to ▁protect ▁them ▁from ▁tid al ▁water ▁during ▁the ▁concrete ▁cur ing ▁process . ▁ ▁Con crete ▁is ▁fav ored ▁where ▁traffic ▁flows ▁are ▁heavy ▁and ▁access ▁is ▁required ▁by ▁vehicles ▁that ▁are ▁not ▁adapted